Yes, I would say the sticker experience was MUCH better with Predaking than with past Titan Class figures. The stickers came off the sheet without issue, weren't too hard to place, the directions were mostly clear and correct (and when they weren't, it wasn't hard to figure out what needed to be done). I had very little trouble getting the stickers to adhere. In the few times that a placed a sticker incorrectly, I was able to peel them off and set them right without issue.
As far as time is concerned, it didn't take too long to do them all, but I have two copies (because I'm crazy like that) so it took me several hours to get all 10 figures done. The first time was the roughest, but the second time through was MUCH faster. Divebomb's many stickers were at first intimidating, especially the ones for his huge wings (front and back), but they went on quite easily, and the molded detail on the wings helped guide their placement very well. I'm quite happy with the results.
I agree with Will too. Power of the Primes Predaking is a solid figure. He stands well, poses well, has good heft to him, and all the joints are tight and solid. The combined mode is the star of the show, but the robot modes aren't bad (combiner kibble, et. al.). The beast modes don't look any worse than the G1 figures, but they're definitely the weakest part of the whole set.