I've just played a stretch of two hours straight, arms and shoulders hurt, still using my trusty old Guitar Hero 3 guitar (WTC one doesn't seem to register hits properly). I've got to say that it's a treat to have not only non-upscaled graphics in a game like this (looking at you GH), but also the timing being pretty much flawless without calibration (also of course thanks to my receiver and tv, but still).
I'm getting a lot of songs really right even if I've never played them before (I've never played any of them before, as this is my first Rock Band game, but I've played a bunch of GH), and I'm only playing Hard and Expert (mostly Hard, but now always Expert straight away if a song has 3 dots or less, and I'm sure I'll be doing all my favorite songs on Expert).
I also somehow survived even Free Bird on my first attempt (Hard, it looked scary), and even got my first perfect solo (yeah, on the first solo obviously not the second
). That second solo though, I thought my eyeballs were going to fall out or dry up, because there was no time for blinking and that thing just kept on going!
Loving the game so far. I also bought a Police pack, downloaded the free Doors DLC (which is up now), and bought the full Red Hot Chili Peppers album, which is one of my favorite albums of all time (and which is installing now).
I definitely need more friends on my (PS3) list who play this though, so if you want, add me (PSN: niwrA).
Wonderful game and I can't wait to take it to the next step too with a Pro mode instrument. Hopefully I can fix my yellow cymbal connector on my GH drumkit soon, and not too long after get my hands on one of the Pro guitars and use the MIDI connector to hook up some MIDI keyboard or other. Still wondering if I should get both of them or just wait for the real guitar and only get that.