EGW is good for the $.

Farris is very good, but the last one I got was not true picatinny as the slots were slighly narrow.
Still superb. The only rings I had that would not fit were IOR Rings.

TPS bases are very good and expensive, but I returned two for an exchange and never got a base, return call or anything.
They were gone.

I like Burris Extreme rings. Super heavy duty.