Most people seem to find Grand Slam Tennis frustrating for the first 3 hours of play, after which they find the game very rewarding. Also, it seems like a lot of people have a tough time with the autorun placing them on the wrong side of the ball, so playing with a nunchuk is apparently the way to go.
I suspect the delay will be because EA is using a gesture-based mechanic which takes into account your follow-through. So it's not going to know where the ball is supposed to go until a moment after your 'racket' connects with the ball. Maybe not the best design choice EA could have made.
Perhaps the best demonstration of the fidelity and responsiveness of WM+ right now is disc golf in Tiger Woods 10.
You might want to check out this thread for more impressions:
http://www.vgchartz.com/forum/thread.php?id=76266
And here's one specifically for Tiger Woods:
http://www.vgchartz.com/forum/thread.php?id=76401
"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.
