Pros: These work fine for XGD2 and XGD3 (with iXtreme Burner MAX firmware installed.) MUST have the RITEK version.

Cons: Last 2 packs have been version MBIPG101-R10-65 and have been giving me trouble burning with IMGBURN.. No way of knowing what your gonna get...

Pros: These are the RITEK S04-066 disks (same as old memorex model. memorex is now using MBIPG101-R10-065). They work fine as long as you change the write speed settings in media code edit. Never a bad burn on 2.4x speed.

Cons: Why do they keep removing the disks. Now these disks say "DISCONTINUED" and "may not be restocked." C'mon Son!

Overall Review: Im guessing it might be because of what these disks are used for that causes the issues? Its just a guess...