Yes, I used Ritek discs for a while and they were fine, then they changed their DVD "formula" and the quality went straight to you-know-where.
I suppose for $2.99/each, I should at least try a few.
UPDATE:
I just ordered some from mwave.com, we'll see how good they are. I noticed that newegg.com has them for the same $2.99 price, but their shipping is much higher than Mwave. However, there are some user reviews on these discs at Newegg:
It's a pack of 15, and it comes down to $5.28. So far, I've had no problems with them, and Memorex media has been very reliable to me in the past. I would say less than 1% coasters in years of heavy DVD and CD burning.