I had the chance to vape the TFV4 at 100 watts in Houston. I immediately wanted it, but the shop owner didn't have any in stock ( I hate when they do that! LOL ) I watched some reviews, and even though I was absolutely blown away by the vapor and flavor at 100 watts on a triple coil I was talked into the Crown tank. Great tank as far as build quality. .5 ohm stainless coils took me at least two tanks to break in. The .25 stainless coils were much better and they do deliver a nice vape at 40-60 watts for me.
But honestly, comparing the Crown to the Subtank mini with vertical coils... I dunno, I have never had a single dry hit or funny taste from the new coils in a subtank... The Crown was good, but the flavor did not blow my socks off like the TFV4.
The TFV4 is in the mail with a back of triple coils. I cant say its a game changer yet... but its been the most impressive vape I have had from a pre built sub ohm coil to date... nothing else has come close.