Same system. Ego, Ego-T or popular clone Riva 510 (from Liberty-Flights.com only since their kits are all the current 3.7v model). You can use anything on Ego-T that you use on Ego. Any 510 manual system is great for cartos. Even slim manual 510 but then you can only use standard resistance cartos.
Boge cartomizers are the most popular cartomizers and probably the easiest and most consistent. And there are a lot more exotic cartos. But I won't use more than 20% VG in Boges. I use a normal non-tank atomizer and drip tip to vape 50/50. I recommend you learn to use Boges with a thin juice. Then you could try the dual coil cartos or reservoir cartomizers with the thinned 50/50.
I agree. The only thing I don't know much about is the difference of PG/VG ratios with the Boge cartomizers. Like I said earlier, I have friends who use the same cartomizers and don't have a problem with 100% VG but who knows?
A lot of people do prefer a drip tip and atomizer but I think just as many like cartomizers. You can also use a drip tip with cartomizers and either pull it off to refill or (when you get pro) just drip into it. It's not necessary though. It's all up to you to find what you like.
I don't like dripping because it can get messy if you overdo it and you have to drip a lot if you're a heavy vaper. It's a great taste and throat hit but atomizers are just too damn iffy, especially for someone like me who can taste everything. It's not a consistent experience either. I hate the taste when it starts to get dry and if you drip before you notice the drop off you run the risk of flooding it. Plus, I'm lazy and I don't want to clean atomizers. You might like it though. It's always handy to have a regular atomizer around so there is no harm in trying them both.
I buy the cartomizers so I can throw them away when they aren't up to par. I can also simply grab a new one for a new flavor. If you use the same atomizer for a new flavor it will still have the previous flavor on it, even if you blow it out. They pretty much have to be cleaned or dry burned to get rid of previous flavors. The taste/hit is very close to dripping and it's more consistent. Dryness, refills, and flooding occur less often.
I've heard of people cleaning out cartomizers to save money but I like them for convenience. Cleaning doesn't sound appealing to me at all. =D
Another thing, it's hard to say which is more cost effective. A regular atomizer will cost about the same as 5 cartomizers. The amount of use people get out of them varies greatly.
I started out with regular atomizers with filler, quickly switched to the drip method which I did for a long time, and then went with cartomizers. I tried the t-tanks after and immediately disliked them. That seems to be the typical process for most although from what I've seen people usually go back to dripping or using cartomizers. Some do enjoy a t-tank though.
PS - I personally prefer low resist cartos/atties/t-tanks with a 3.7v device.