I will say Uplay almost ruined this for me, but it seems whatever the last update was changed it so it doesn't load up the ubisoft front end everytime you start the game. It was downright annoying how if you didn't have Steam preloaded before starting the game Uplay would load first, then nothing would work. Then Uplay would download some uplay update that (as far as I'm concerned) is completely unnecessary. Then empty you out of all of it so you had to start it again. Seriouly. Ubi have to have some pretty dumb people running the company. Who doesn't test this stuff and say "this is really annoying, and if I paid for this I'd be annoyed and just say fug it and play something else" This is what happened with the last Ubi game I bought by mistake. I'll never load that turd again just because of Uplay. /rant
That being said, Rocksmith itself is well worth the price. It can last you longer than even modded Skyrim would.