i've been loving this game. i've only put in about 3 hours worth so far. but it's very addicting. and very hard to stop. my wife has also been playing it. she's got nearly 10 hours in in just 4 days. it's the 1st game she's liked since tetris ds.
the graphics are really good, and the controls work really well. the pacing seems perfect. i've heard some complaints that it's too slow, but i haven't noticed it.
i would prefer to zoom out a little on occasion. but so far, that's the only flaw i've noticed. or if i could have the garden's map on the top screen that would help out a lot.
i can't speak on how it compares to the 360 version, but i can definitely say that it's a great game. and until i finish some of the other games i'm playing, i won't be able to put too much time into viva pinata. but when i do, i plan to really tear into it.