From what I've seen there's certainly many respectable examples of well done RS's out there... However i haven't seen anything that blew my socks off. Definitely haven't seen anything pushing the limits of what these motors should be capable of, or even close. I'm personally shooting for the stars with my own ambitious build (which I hope to be FINALLY getting underway very soon) but there's just nothing that's come across in my searching that qualifies as a "ridiculously built RS6".

Disclaimer-
Simply my opinions, which are based only on what I've seen and not meant as any type of dig at anyone at all.