Are there any really good cd cleaners out there?

The best by far is L Art du Son it will give you wonderful detailed sound.I have tried many this is the best by far. Enjoy!!

No isopropanol in the house? Plain vodka should work ok!

Best products I’ve used are by Digital Systems and Solutions. Clean Disk-cleaner, and Ultrabit Platinum (just a small drop) for refined disc reading and enhanced sound. Noticeable improvents through my Spectral/MIT system. Dish soap has been an old standby for years and seems safe. This products give a noticible improvement over soap; I’ve checked. 

Another vote for L'Art du Son -- more than just a cleaner, a once over with this is a must even for brand new CDs