Hey guys,
what is the experience of ladderresets, is it recommeended to get HR's and other stuff on laddder and keep it, until market normaliseed after reset for non ladder?

Yes

Indeed

Sure.

Hrs are worth significantly less on nl because your runeword options are limited and there are many hybrid runewords for cheap that what you can role on nl (enigma, beast and exile) all have hybrid versions. Only thing you really profit from is crafted Caster amulets and blood items. Aside from that almost everything is 1-10fg for near perfect or perfect rolls on unique, even elites