Thanks. "No mods needed" sounds good. I called a LHS shop today though, and they said it's like €600, and they'd have to order it.. Or I can wait a couple weeks and get it(presumably) for €540ish... Still a lot. I think it'd probably be the smart move, but I kind of want to order one of these Zeus's just to have a kit to build...
If you do decide to run 6S with a Kraton, do you need like a programming card to change the ESC settings, as you did with the MT4 G3? I wasn't planning on getting any 6S lipos, but the "If you're going to be a bear be a grizzly" thing is rearing its ugly head.. Looks like about €50ish apiece for a Turnigy HD 6S 4000 60C at HK - good lipos for planes... Not a hard pack but I wouldn't want to spend more for lipos...
Anyway, still running it all through my head.. €700 would be way more than I was wanting to spend... (Kraton + two 6S lipos...)