I have never been on Fasttech, so I can't say anything about what they may or may not have, but I would recommend the BFM by Bay City Vapor (if you can find one) or the 2Six by Tarsius Customs. I just got the Ryu Ninja Edition, and it has virtually no voltage drop, but isn't a hybrid like the previous two. The Hades is a reliable mod with plenty of replicas available if you can't go authentic.
ETA: Forgot about the dripper. The TOBH and Stillaire 26650 versions are both nice, but I prefer the Mega for the post hole sizing. My favorite is the Asmodus, though. Hands down. You could also get the Hades and Cerberus combo and run it in hybrid mode.