I still love my Bellus for dual coil builds, the deck is easy to build on but you can't fit any massive builds on there. Got a dual 26g SS 9/8 wrap 2.5mm build to fit pretty comfortably...
The problem is that there is no "best" there is only best right now ;) tastes change and there is always the "i want that new shiny piece of gear" factor... it never ends!
Ooooh okay.. I like my TFV4 for single builds and my Bellus for dual builds both at between 40w and 60w depending on the joose. I'm running a Koopor plus. The Kbox 200w looks pretty neat (i may have to acquire this) All the mods that have come out recently look good so i dont think you'll go...