Yeah I'm really enjoying it. It's a bit easier to play, but harder to master than the other 2-D Mario games. On world 4 at the moment, but I warped (unknowingly) so I'm headed back to World 3 to finish that before I move on.
Just got it today (after waiting 2 weeks for delivery) and beat. Ran through it quickly to gain the ability to save anytime. Now gonna go back and get all the coins and find all the hidden levels and goodies.