I was looking at that one as well as the in the review seen at $52.63 ICig V9 50w E-Cigarette Mod Variable Wattage | Vaping Discounts
If you use the code XMAS14 the price get bumped down to $50 even at Fasttech when placing the order. ICig V9 5-50W Variable Wattage VW APV Box Mod
That was about the only besides Alibaba the Chinese wholesale I've seen that available just coming out. Fasttech also has the ZNA 50 marked way down! When shopping around on Black Friday I found a US with it for $69.99 black body, black battery tubes still the same price while FT went from about $70 way down to $45.84 for the stainless/Aluminum version seen at ZNA 50 Style Variable Wattage APV Mod
The other 50w mod seen lately is the DovPo DT-50
for $60.96 I was considering but reminded me a bit too much shape wise about the iTaste MVP(6-11w) and VTR(3-15w) mods I already have. The ZNA 50 has worked out quite well without all the thrills with an Atlantis sitting on top while I am still waiting for another 30watter the E-LVT 2.0-30W
to show up since that was ordered on the 7th from FT and seems to be tied up in holiday traffic!
That first mod ECig V9 50w can wait here however until January if I decide on going for it. For the most part the Nautilus tanks run best from about 11-15w maybe upto 18w while the Atlantis is kept lately about 20w except for some flavors where I step those up about 30-40w. Same with the 50w Smok BEC Pro APV there as well which seems to work out best for those tanks.
I run the five full size 5ml Nautilus tanks on the VTR, Vamo V5 and V6 20w and the Vamo Fire wooden body type Vamo along with the new Smok Guardian epipe mod I got in. Another tank that will sub ohm like the Atlantis coming out is the Horizon Scion Bottom Quad Core clearomizer type tank besides the new Kanger Sub Ohm that uses all natural cotton wicking not Silica according to the Canadian blogger Vapor Joe. VaporJoes Canada
I'm not overly concerned about that however since I still haven't run into the need to change a coil on either of the Atlantis, Nautilus, or Mini Nautilus tanks as of yet! The Smok tanks(Tumblers mostly, GBC, HBC) would need that changed or rewicked after a couple of weeks as well as need to be flush out with hot tap water or the coils soaked overnight with a denture cleaner when going change flavors of they get gummed up a bit where you start getting a burnt taste.
As for which mod to choose you have to decide on your own what will best suit your own needs there. Here I manage a collection where some would say "a battery(or mod) for every occasion"!