If I recall correctly, the stripes are also a symptom of bad RAM. I don't know how you would deal with this on a Classic though. (If it has a RAM card, pull it out then see if it boots. If it's onboard RAM, I don't have a clue.)

I too am a fan of CDSunrise, but it doesn't support ISO9660 CDs either. While that isn't an issue if you know that you are using HFS CDs, I do believe that it makes it more difficult to test CDs burnt on modern systems (simply because some programs aren't good at specifying whether they are burning HFS or HFS+ CDs).