I'm searching on NewEgg and they have a few models.

Which model are the MKM003?

Unfortunately there is no way to tell, other than putting the disc in your drive and reading the data from the disc. I recently found a 3 pack that is mkm001. I am going to purchase a 50 pack to see which one it is. I do know that a lot of people say the ones made in Singapore and India are the mkm discs.

http://forums.xbox-scene.com/index.php?showtopic=577735

The above is the best thread about media I have read.

also:

http://forums.xbox-scene.com/index.php?showtopic=735458

the above is conversation about TDK media, in particular S04-66, which some people have success with.

You will find that MKM-001 and MKM-003's are what the majority of people use. But really at the end of the day, it comes down to what your burner likes working with.

MKM's whether they are 001's or 003's come in a variety of flavours.. but Verbatims are the pick of the bunch apparantly and you should try to get media made in Singapore.

S04-66's come in various disguises, but try going for TDK. Memorex, and a few other brandings are no where near as good.