As to print quality, there’s no reason to give it any thought. Disc printing does not require photo-quality printing, and with proper setup, they will all look virtually the same on the same media. Printable discs simply do not support high-res printing. (possible exception being TY Watershield)
The Canon IP4500 is by far the fastest for discs. Nearly 2x faster than the Epson offerings.
The few people around here that have tried the HP’s have been unhappy with the disc print software, so plan on also buying extra software for discs. The HPs have also been reported to sometimes leave roller marks on the discs.
All in all, HP is not selling quality hardware, and drivers and software are pretty poor.
If CIS is a must-have, then you should get the printer that offers you this possibility, which is usually Epson. But you’re not going to find a printer that offers everything you want. For nothing but discs, I’d suggest the Epson R280, which does have CIS systems available, though it is an ink hog and slow. For quality, reliability and speed with discs, the IP4500 would be my recommendation.