Hi Andy bhai,
My current fav is the SMPL (SKU1943604), that's a KISS :P . But, it has no 510 pin, so be extra careful.
My best work horse: Nemesis (SKU1448300), a must have for any respectable vaper
Others that i like: brass PAPS (another good work horse), LPG (micro, cute and works perfectly), 4nine (for crazy people only), Paragon (stylish copper), Hammer (OK only with a replaced top cap), Nemi (mini Nemesis).
I had also an Atom (good, quite similar to the Astro) and a Stingray X (i would not recommend, too fragile).
All are from FT.