I have tons of old CDs with sticker labels on them. I’ve never had a problem reading them (yet), but once one of my discs got stuck in an iMac (which has the drive in the monitor itself) and I had a lot of trouble getting it back out. I was lucky that it actually did. I’ll never use stickers again due to that and the fear of ruining hardware that was mentioned earlier. Printable discs are the way to go for sure. Seems like a less “homemade” way to go too once it’s done. Aligning the printing area perfectly to the disc can be a challenge, and the exact measurements/orientations can change depending on the disc type/brand. As you might be able to tell from my recent photos in the NJVC Bluray Collection thread, I got the orientation slightly off for ANH and ESB. By the time I did ROTJ and the documentaries I had it ironed out and pretty much perfect. So definitely practice on other discs.