The original Mario Tennis game on GBC stole so much of my time as a kid, oh man. I didn't like the GBA version as much, but I still enjoyed it.
I hear the DS version is ... not great. But I have wanted an excuse to grab Ocarina 3DS for the longest. This is it.
It's way too easy to increase the size of your PS3's HDD to not get something due to space. You can get a 500GB HDD from Amazon for like 50 bucks, take a few hours to back up your hard drive, install the new one and then restore your system. It'll take about half a day to finish but it'll save...
Amazon sent me the Xbox 360 version of a game I ordered the PS3 version of, since they didn't have a PS3 version available to replace it with they not only fully reimbursed me, they let me keep the game they sent.
Amazon. FTW.