Sonic & The Secret Rings was a nice idea, but the controls are pretty horrible.
The jumping mechanics they implemented are terrible. You have to hold down the jump button (this causes Sonic to do a sliding move), and as you hold it down, you charge the jump (so if you need to clear a big gap, you have to anticipate it), and when you release the button, Sonic performs the jump. The levels are pretty confusing sometimes, and some of them had me extremely frustrated.
It looks pretty for a Wii game, and tilting the controller left and right to move Sonic feels pretty good, but anything other than that (namely jumping, and I don't know, STOPPING, since Sonic accelerates constantly unless you tell him to stop), cause a lot of frustration.
I'd rather stick with Rush any day.