What diggler said....
Allow me to add that once you go over the IOR price point, you reach the land of diminishing returns. I had badger rings for 175.00 and No thanks. I like my Burris Xtreme and IOR gear. Great stuff for the price.
How are the EGW? I was always interested in them but never got around to trying them.
As far as bases, I have a very affordable weaver on the 700 in my signature, for the price it was a steal. Something like 30.00, maybe less??