For me the Lost Vape hands down, the build quality seals the deal there. I've had the VT Inbox since before Christmas and remains unused and will be looking for a new home shortly. The Wraith is a lovely bit of kit but I'm not sure how well it will do TC - that's something I'll look forward to when I have a little more time to play.
All of them came as kits with atty's - none look particularly good, especially the nasty one on the Wraith. Hadalay and O'atty are good. Again for me, a 22mm BF Goon would be perfect.
So, LV, for me at least is the best of the bunch. Certainly it costs more but in comparison to the Inbox those extra pounds show. Close on its heals would be the Wraith, nicely built but lacks the DNA board. The Inbox has the DNA board but feels, well; a bit effort in design and construction wouldn't have left it at the bottom of the group.
If there is one fault with the Therion that irritates it's the silly internal black plastic divider that separates the bottle from the battery, it's fiddly and doesn't seem to locate with any precision - happily it doesn't affect any function.
I bought mine from Gearbest early in the month with a spare door (black elephant leather looks lovely) - cost was just over £85.00 IIRC and delivered in 7 days.
If I could find a LV Halcyon that would be me sorted on the squonking front!