First, you should use a good quality CD-R (there is a topic on this, my personal favourite is Philips silver premium)
Second, burning at a lower speed will make it more likely for no errors to appear on your backup. You can accomplish this in any burn program. You can set the recording speed to either 1x,2x, 4x, 6x, 8x, 10x, 12x, 16x, 24x (perhaps even more choices or fewer choices, depending on what the burner can handle).
Some programs have incorporated a error checking tool, but there are also stand alone tools for this. One of them is CDR Diagnostic. Don’t know who makes it or where to download it, but on www.download.com or www.Tucows.com (or else www.google.com) you can probably find this. This program can check how many errors are burnt on your CD.
The quality of the WAV should never be compromised, for it is digital already and it is burnt onto CD digitally (all ones and zeros), so the only thing you should have to worry about is the amount of errors that is burnt on CD, which you can check with above-mentioned tool.
For Audio burning there are several really good programs. Earlier today I read someone recommending WinOnCD 5.0 (it is from Roxio now). Feurio from Ahead is a program specifically designed for audio burning. I think you should check both out.
To start your search on burning programs you could try this site:
www.cdrsoft.cc (beware the popups though)