You'll be pleased - LOTS of people have ordered that kit and report great results.
A couple points:
1) There's no official "brand" for a VAMO. Odd, but there really isn't.
2) Don't lump FastTech in with the other sites you initially mentioned. They're more reputable than the others for a couple reasons that you'll find documented here on ECF:
a) They're honest, basically, about knockoffs. If something they show does NOT have a brand name, then it very well may be a copy. Example - the popular EVOD clearomizer. The EVOD is from Kanger, and FastTech sells a copy. A lot of people like it fine - I personally found it inferior, and will only buy my EVOD's from places that sell branded Kanger product. But the FastTech page DOES NOT SAY KANGER.
b) If they DO name the brand - if it SAYS Kanger, or it SAYS Innokin, then I have yet to find someone specifically accusing them of misrepresenting that. You just have to know that "EGO" is not a brand. And "ViviNova" is not a brand - those are types of products that are made by a lot of vendors. If you want a Joyetech EGO, or you want a VISION ViviNova - you have to find that specifically stated on a FastTech listing...
c) Most reports here indicate that FT is good about customer service - if something is wrong with the product, they work with you to replace it...
Finally - I got my Innokin SVD from them (ALMOST got a Vamo - that'll probably be next) - and it is a "real" Innokin SVD, and working perfectly. And that's even though Innokin claimed that FT did NOT have real ones (because Innokin has a price-fixing policy, and FT was selling them cheaper than they're supposed to).
Update: I went ahead and ordered the VAMO V3 in SS from FT with the Panasonic batteries and charger.
Thanks for informing me !