I've been tearing through TopVapor juices over the past month. As background I am a relatively new vaper (about 2 months), formerly a pretty casual smoker (not at all the pack a day type), and my setup is a combination of stock 510 batteries and true 3.7v passthroughs. Looong post ahead.
Maple Cream (16mg): 10/10. Probably my favorite juice I've tried, not just from the TV line, but from anywhere. One of the first juices with a flavor I actually crave by itself and not just as a nice simulation of some other delicious flavor. Reminds me of brachs maple candies, although I can see the maple syrup comparison too. Fantastic vapor production and a nice, consistent, warm throat hit. Try this one if you haven't, I think you'll like it, unless you really dislike sweet flavored liquids.
Vanutla (16mg): 9/10. Flavor profile is actually a bit similar to the maple, but with a strong nutty taste, probably most similar to Hazelnut. I prefer the maple by a bit, but I could see how this would be a nice liquid to have around for coffee time and might be better for some. Vapor production and throat hit are similar to Maple, TH maybe just a little less pronounced.
Spearmint (18mg): 9/10. One of the better "minty" juices I've tried, and I am a fan of mint flavors. Extremely "juicy" tasting, very sweet and very similar to spearmint gum. Some people might find the TH a little underwhelming for a mint flavor -- it's a sweet and not a menthol-y mint and I found it just a little lacking at 18mg, which is the highest I vape. Vapor production is among the best of any juice I've tried.
Fried Apple (11mg): 8/10. Really nice, subtle flavor. I was a little disappointed with it right out of the bottle, but as I've let it settle, the profile has gotten much better and more complex with a nice warm cinnamon flavor moving in front of the apple flavors. There's something else that I can't quite put my finger on, I guess that's the "fried" or "pie" flavor. Perfect for a fall morning. It's all more subtle than what you'd expect from the name, and a really high quality all-day vape. Vapor production is right in the middle for the top vapor and the throat hit is quite good even at 11mg -- the cinnamon really produces a nice extra hit on the exhale. One thing to note if it matters for you, this is one of the messier dripping juices I've tried, I assume this must be a fairly heavy VG formula.
Grandpa's Mix (16mg): 7?/10. I have a hard time getting a handle on how much I like this one, I think 7 is closest but you can give or take 1. The flavor is probably the most complex and unusual of any juice I've tried. A sort of cantaloupe-y melon predominates, with a crispness (cucumber)?, this flavor gives way to resiny/piney notes that vary in strength, and ends with a kind of tart berry flavor that again varies a little bit in strength. Throughout there is kind of a perfumey (but not in a bad way), fresh/water feeling. I think I detect a faint tobacco taste too but I could be wrong on that. The only thing negative about this juice is that the vapor production and throat hit are both a little on the low side for the TV line. This is a really complex but refreshing flavor that I think would be great as an all-day vape, possibly even better as a warm weather flavor.
Cola (16mg): 7/10. I've been searching for the perfect Cola flavor, and this one is pretty good, but I don't think it's quite there for perfect yet. It's a refreshing flavor that makes your mouth water, but a little bit too sweet in the end and not quite enough cola zest for me. I think of any cola flavor, this one is closest to RC Cola. The vapor production is very good, probably second to the spearmint, TH is a bit on the harsh side.
Pumpkin Ginger Bread (11mg): 6/10. I really liked this flavor right out of the box and probably would have rated it a point higher then, but I think it's anti-grown on me. The fact is for me it's a pretty simple flavor and over time I haven't really been able to pick up anything other than ginger. It's a pretty tasty ginger, but I was hoping for a nice fall pumpkin or spicy gingerbread. The vapor production is right in the middle for the TV line that I've tried, but TH was a little disappointing for what I would have expected from the description -- I realize it's only at 11mg but I usually get a little more from the right liquids at that strength.
Mad Chai (0mg): 2/10. I got this as a 0mg flavor for a nice pleasant late night vape, but I have to say it's the one TV liquid that I have been really disappointed with and the only one I couldn't see myself reordering. I didn't get any of the tea or spice that I had hoped for, but instead a perfumey, synthetic, very soapy taste. Tried it once new, tried it again a couple of weeks later and pretty much had the same thing both times. Reminds me of a decorative bathroom soap. It gets 2 points for vapor production which, consistent with the TV line, was good and satisfying. I didn't expect any significant throat hit at 0mg so I don't knock it for that, the flavor was just really unvapeable for me after a bit.
There are several other flavors I'd like to sample, but I think I'll be slowing down on the sampling somewhat and ordering larger bottles of the Maple Cream and possibly Spearmint soon; I already have a pretty good supply of the Fried Apple. Overall I've been highly satisfied with the Top Vapor line and would recommend it to anybody. I haven't been able to find anything that touches it in terms of the price/quality combo.