I have heard alot more about nippon than beck and arnley or whatever that stuff is.
Check out:
Performance Parts Aftermarket and Racing
See what these guys carry. Call them and dial ext 103.
Speak to Dave. If he can't find you some quality rings at a fair price.
He can point you to them.
O'rielly's is the lowest grade parts distributor I will use on the supra and I am so utterly choosey about not having to keep working on this tramp that I refuse to stoop to lower quallity parts..
Not that this has aided my car in running or anything but it should when I get it sorted out somewhere around 2010.