I've pretty much tried all of the strawberry flavored stuff. Or most of them anyways. Here are my thoughts on them and any differences I notice between them:
Blissful - This is suppose to be strawberry and white chocolate. I dunno about you guys but white chocolate in general doesn't really have a very strong or "obvious" flavor to me that you can identify easily. It just tastes like a variation of vanilla to me. This to me is a pure and simple 'candy'ish strawberry. Kinda like strawberry icing or the pink frosting that is on strawberry Pocky. It's sweeter than some of the other strawberry flavors and has more of a icing or candy like flavor, but with cream just like the Pocky frosting.
Heaven's Kiss - Title says have you been kissed by an angel? Or something like that. I guess I have if it tastes like strawberry shortcake? The strawberry in this is more subtle than the other strawberry flavored juice, but it has a whipped cream and cake element to it. I would say its 40% cake, 40% strawberry, 20% whipped cream. I personally really like it. You can definitely taste the cake element in it, it's not just another strawberry + creamy/bakery something.
Momma B's Cheesecake - I really liked this one. As far as I can tell, the strawberry in all of the strawberry flavors taste similar, but the juices taste different from each other because of what its mixed with obviously. The cheese part of this juice is quite prominent and very tasty at that. It definitely has the "cheese" essence instead of a funky cream flavor like some cheesecake e-liquid I've tried. As much as I like this though, I find that I would get tired of the cheesecake part after a while as its strong and somewhat heavy. Don't get me wrong, it's very good and I'd recommend picking up a sample but I prefer the Heaven's Kiss. There is no crust flavor from what I can tell. Just the cheesecake and strawberry.
Momma's Milk - The description only says its a "fruit mix" but I think it tastes like it has some strawberries in there. In fact, to me it tastes like it is mostly strawberry with a little bit of other fruit. This says its a custard but it is nothing like the Strawberry custard. They taste completely different. I will get to that in a moment but this one is one of my favorite juices from this vendor. It's a nice fruity creamy mix... very smooth and silky and light. It's more subtle but still very flavorful.
Strawberry Custard - As with all of the 'custards' from this vendor, they all have a similar base that is very reminiscent of chocolate to me. It's probably just me, but all of their custards have this taste and I'm not sure if I'm a huge fan of it. Maybe it needs a longer steep? It's not that I dislike it but it doesn't taste quite like custard to me, this one actually tastes like strawberry and chocolate rather than strawberry and custard. My thoughts are the same for the other custard mixes (in which I've tried 5 of including this one). It's not a bad flavor, I just personally prefer the other strawberry flavors.
Strawberry Spread Axel - This is suppose to be just strawberries and cream. Compared to the other strawberry flavors, this one actually reminds me of a wafer cookie with strawberry creme. Or whatever those cookies are called. It definitely has a cookie element to my taste. The 'heavy cream/vanilla' element to this has a slight bakery note so maybe thats why I think it smells/tastes like a wafer cookie. I personally like it.
Strawberry Milk - This was the first strawberry flavor I tried. At first, I didn't like it. It had a funky weird smell and taste to it. I came back to it a week or so later and it was a lot lot better. The funkyness had smoothed out and it was definitely more "milky". Now, before I tried the other strawberry cream/bakery flavors, I wondered to myself, can they really make cream and milk and vanilla taste different where you can differentiate between whether its strawberry this or strawberry that? I can't say it's a WHOLE lot different from the other ones. In reality, I find them all somewhat similar but I guess if I had to pinpoint a difference, this has a more 'artificial' strawberry taste. And I don't mean artificial bad but more of a 'fake candy' taste if that is what you want. Like a glass of milk with a lot of strawberry flavored Nesquick. But I would say this one is most similar to Blissful, the main difference being the Blissful is more sweet and frosting-ish and the Milk still has a small 'funk' taste to it that isn't bad but think evaporated milk or something.
Hope this helps for those of you who are interested in the strawberry flavors. Your experience and opinion may differ but I'm curious to see if other people notice major differences between the strawberry + cream type flavors.