Wyetech Opal preamp

Has anyone had experience with a Wyetech Opal preamp and how it may compare to a Lamm LL 2.1,
and other highend preamps in the $5-10,000 range?     Thanks

Hi - I have an Opal.  Haven't felt the need to change it since I purchased it a few years ago, it's very good.  Can't comment on the Lamm.