Here's the thing. ..You're talking about at least two VERY different experiences. My suggestion would be to spend $20 on an RSST and $20 on a Kayfun/Russian clone... And see which system suits you more. You see the popularity of Kayfuns, and I love mine. It's my work tank. But I love gennys too. And good points were made about those as well. At home I use a Kraken and a Zen or I drip!
Try the styles cheaply then make an educated decision based on YOUR experience!!
As to the T1... It looks to be similar to the Kayfun style in Tank mode??? But you can drip with a Kayfun... Maybe just astetically diffetent???
I'm not buying clones anymore (besides the kayfun ones because they are proven to be Identical besides thread quality), I'll definitely end up trying both soon, but for now I went with the genny! Because it's what looks better to a builders trained eye (airflow, and coil wise) plus I'm getting the authentic grand vapor built version and every review I've read claims it's the nicest workmanship they've delt with, so it really just caught my curiosity. I'll be dripping at home like you a majority of the time, but it'd be nice to have during a long movie or whatever. And yes I know the difference between the two, one goes with gravity, one doesn't.
-I think it all comes down to my preference, I'd much rather have a dry hit than flooding, which I've heard is a minor issue among kayfunners (that I'm positive I can fix), along with the wish for larger airflow, and I'm a guy that likes freakishly large airholes, and the prometheus has two. I'm an excellent builder, and I've gotten my wicking down to a flawless science so I don't think I'll have a problem with either of them, and I will have both because I think they both look amazing reguardless of my preferences. The russian is probably the first topper I've ever wanted to buy on looks alone, plus it works great from what I hear. I may have made the wrong decision in buying the prometheus first because I like bottom coil carto's more than top, however I haaate flooding. I'd rather re-wet the wick myself, than have to burn it away, and wait for that boiling juice to evaporate, if I can fix it myself by dripping a little, it'll probably make the waiting 4x faster so that's the reason I chose the prometheus.
-But I'll find out by the end of the month which I like better!
