hei @Rodrigo. kind of figured you’d be into this thingy (: yes, i bought the fast one (and am rather fed up with this “business-modell” – there’s basically zero support besides a small, slow community)
i pretty much maxed the thing out as good as i could – got an active cooler (as they tend to get hot), some passive coolers, casing, display, 3A power-supply and what not (2A+ as they suggest didn’t work at all for me – had constant, random crashes).
strangely, mine came with a win10 key which makes me believe even more, i may have gotten an older, beta, pre-used or wrong edition. unfortunately DFrobot doesn’t seem to reply to mails and LattePanda don’t even bother to publish a way to contact them 
guess where at the beginning of something pretty neat – how ever the very beginning. will keep you posted.