Honestly, my daughter was looking forward to SingStar. We have Rock Band games, a number of Guitar Heroes and had two microphones. Unlike others, we had no problem getting our RB and GH microphones to work. Though, we did run into a minor issue at first. You have to make sure that you have enough microphones for the players you have assigned on the set up screen. If not, it will repeatedly tell you that you don't have a microphone. We realized after a few seconds that it had us for 2 players rather than one. Fixed that and all was fine.
The song selection is great and my son was excited to see they had guitar capabilities if you paid a little extra. However, the song he really wanted to play on his RB guitar wasn't one of the available, so the guitar download turned out to be a waste of time.
Once we started playing there were things I clearly did not like. Scoring is far different to RB or GH. If you're holding a sustained note and your pitch or tone wavers even slightly, it counts it was wrong. During some songs, the original singer will drop or raise slightly, SingStar didn't account for that in the expert setting. You had to hold the note flat or else.
I also didn't like the way that your vocals are all anyone hears. Background music takes second stage. I understand that's all part of the game, but I definitely did not like hearing myself coming out of the surround sound, and I can sing. It's just really weird not having the music playing at the same volume or slightly lower.
At the end of a song you're rated. I'm not sure what a perfect score delivers, but I got as high as a jeweled crown. Most of the time, we were pulling the Chihuahua, which isn't particularly flattering.
There is a duet function. For duets you choose one of the two singers. Duets on one vocalist tracks are divided up with the two of you singing alternately or sometimes together.
After this experience, it was clear. Rock Band 3 is far superior.