does xmr mining draw more power then zec? Thinking about switching a rx 470 rig from zec to xmr.

XMR is leading the pack in terms of mining right now, best to get on it asap.

Claymore's XMR miner is unstable on my RX 480 rigs Cry

It has never given me any issues at all, is there any errors in the logs?

Nope, no errors. It just freezes!