I don’t have much experience with Yamaha, though ppl say its definitely a great brand. With plextor you get a top quality brand and great audio extraction capablity. Choosing between these two I’d go for the price, I mean yamaha’s labeling feature I won’t use since my cd-rs are all low quality light green types that will make any labeling next to impossilbe to read. I only have a 24x plextor but it seems to work fine with these low quality $0.15-0.20 cds, though the new 1.04 firmware gave a lil more restriction to 24x writing, so once in awhile its top speed becomes 20x. Yamaha, in an article I think I read on cdfreaks.com, said that their full cav writing stalibizes the writing because it doesn’t jump into different write speeds. I guess my main point is that you can go either way since they all have great features and brand names, the important things are the prices and cd-copying capablities.
Er…hopes this helps lol