I don't think you can go wrong with either. The GGTS with a UFS is the best vape out there IMO but it ain't cheap and the UFS is unavailable for the present save the classys, the other tanks systems are 95% of that and are what got me hooked on them.

I personally don't like the taste of bottom feeders but I have plenty of friends on here who do. The REO is a great mod, sturdy with a great rep (and I used to own one!

), but I
think they're limited on voltages, I have the VV Ali'i and I like the ability to adjust the taste with the dial. I hope that helps