I'll wait for Wii SPorts resort. However, It's hard to say if Grand slam tennis is worth without playing regarding the load of reviews. A demo service would have been fine, but I guess there are good reasons for nintendo to not allow that.
Go buy Metroid OTHER M!
Wii code: 6775-1034-2238-1634
PSN: birdie93 XBL: luthor93
3DS: 3909-7597-9889
You can add me, I won't stop you!
My website: www.fight4custom.com