Looks like my birthday's coming early, as I've squirreled away enough money to pull the trigger on a V-core kit.
I've been in touch with them with a million questions, and I must say the responses have been excellent, even including a call direct to my mobile in Australia from Portugal last night.
I was going to go with the 500x500x500 model, as it only costs a little more, but funnily enough the Keenovo mats almost double in price from 400 to 500mm, and it seems build surface options become much more limited as well.
They have offered that if I buy the 400mm model but pay the 500mm price (only about 20 euro more), they will extend the Z height to 600mm. I'm wondering if that will be worthwhile, or should I just go with the 400mm all round size?
I'm going with the triple Z axis leadscrew option, but without the motors as I plan to run a single belt/motor. I do wonder about their Z setup as they run 4 upright V slot channels with rollers, which may defeat the purpose of the triple leadscrews, but I'll look at that when the time comes. I'm still open to the possibility of a belt driven Z axis.
It comes with the 400mm build plate, but it's only 4mm thick. If it's flat that will be fine, if not I'll go with 10mm cast ally precision plate.
I've got a ton of gear here including a Duet wifi/paneldue, E3D V6, Meanwell supply, plus/wire...all sorts of goodies.
It'll probably take a long time until it's done, but I'm quite excited to get started. Also glad I didn't go the Tronxy route, as it seems they are a pile of junk for almost the same money. Cheers to those who advised against it.