I have used these maxell cd-r's for years never ever had any problems, I like making my own music compilations from my 100's of cd's and i never get any errors or coasters as they say using these disc's, When people have errors using these cd's its not always the cd's it can be your cd rom drive or something as i have burned music onto these cd's using my desktop and my laptop and always without any problems!
These are good no-nonsense discs - not Taiyo Yuden top-notch discs - and for day-to-day use are fine. I've had no problems with them.
My only gripe is with the case (but not enough to take a star off), in that it's rather basic and awkward to use. If you have a spare 50 case box then it's worth transferring the discs there as soon as possible, just for the sake of your sanity!