Question about ritek dvd-r
 

I have been reading a lot of post about different grades of these dvd-r disk how will I know which grade of disk I would get is there something on the wrapper like a number or something and a second question is in the U.S is there any stores that are known to sell these like walmart kmart staples any other. The reason for asking is so I would be able to know what grade im getting thanks in advance

The good Riteks have dark purple bottoms like the ones at rima.com and shop4tech.com. I have never seen Ritek available at retail stores, just online.

I've never seen the Riteks available at retail stores but they are available on many online stores. I get mine from http://www.precisioncddvd.com or on eBay. I've heard of a lot of people complaining about different grades of the Riteks but don't know anything about it.