Problem with cd burner

I have a generic cd burner I bought from walmart a few years ago, and latley I've been thinking about upgrading. Anytime I burn a cd, they're corrupt, stopping at the data verificaton part. I've been using Nero, but I had similar results from something called Deepburner I got off Google. I'm afraid to buy anything cheap now because of this, and I was wondering if anyone has a reccomendation on dvd burners or a way to fix my current cd burner.