CDRLabs.com

You can do better in price if you look for rebates, but this is a pretty good price for a deal that involves no rebate hassle.

They are probably made by Ritek. Check you local Target for availability.

cfitz

All the ones at Costco here have been Riteks for a long time now.
However they don't always sell a lot of media there so ya never know what they might have.
I found some TY 40x Memorex's there a while back when they had a 19 for 100 deal.