Burris Zee's are good. I haven't used their Signature Zee's, but I have no doubt they're as good as the Zee's and then some.
I've also had good luck with Warnes rings. Just make sure you get steel rings. I'm sure not all of them are bad, but I've had slight griping problems, and major problems with threads being stripped, when using aluminum rings (even Leupold alums).
Only thing I'll put aluminum (rings or bases) on these days are rifles I dont' care about, or rifles that I want to keep light (and on those a peep sight would probably be a better option).