I've never heard of the bad GDRoms either (other than the launch batch of Sonics and stuff), I thought it was pretty much universally accepted that the DC was a great quality system. I've bought and sold at least 10-15 of them over the years and never had a single problem.
I think the worst flawed disc runs were in Japan. I also think the system is top notch too,high quality. It was a new disc format,new technoligy and they had to learn to master it. I think any issues would have been gone by the 4th year for sure if manufacturing stayed strong. I still perfer the Dreamcast any day of the week over the PS2. I love Giant Gram,and about all the other arcade ports for the system. I spent hours with Zombies Revenge,D2,Sword of the Berserk, import Blue Stinger, both Giant Grams,Guilty Gear X,import KOF 99 Evo.most all the Capcom arcade stuff,DOA2,Code Veronica,Grandia 2,Time Stalkers,Giga Wing 2,Ikaruga,Soul Calibur ect ect...
MY ALL TIME FAVORITE DC TITLE !!!! The underdog sleeper title Illbleed!!!!! That game was awesome,and still tops my list of favs. Back around the time it was released I used to go into chat room sand type out really horrible stories and use people in the rooms names for the characters,on the fly. At anyrate,the horrible theme stories in Illbleed were right along the same lines as what I was writing,so I fell inlove with the game right away. That and I mean,you can die from heart attacks and bleeding to death in a mannor no other game had tried. Awesome.