How did you like the Stainless Steel Rat audiobook? Did it hold up over time, and does it work well when narrated?

I used to groove on Daniel Keys Moran, who had a similar style. I found a lot of the smart-ass appeal that I appreciated as a teenager was gone when I re-read them in my twenties. I've avoided re-reading the Stainless Steel Rat for fear the same would be true. I really liked them, and want to continue to remember them fondly. What do you think?