Here are some, I'm generally a music guru: Drum 'n' Bass (favorite), Drumstep, Nu Disco, Glitch Hop, Trance, House, Progressive House, Techno, Dubstep (the good kind), Rock, Pop, some Classical, and Orchestral.
I had that same problem, and this is how I fixed it: blow into whichever button is screwy. Make sure you don't spit in it though. DSi's apparently had a hardware defect on the buttons in which they were not sealed enough to the bezel to prevent dust from accumulating. If you do this a few times a year, it should be good.
I love both franchises a lot. However, I've spent more time on the Mario franchise, starting with Super Mario Bros. 3. In terms of which character is cooler, Sonic is my choice.
It's not even going to be that good. There won't be any user messaging and friend request. Sorry, but I got to be a pessimist this time. However, on the bright side, there will be communities to join, and that I look forward to doing!
Nintendo might be finding a way to fix the online features of Flipnote, due to the Swapnote incident. I think it may be released pretty soon, since they are still marketing it on the U.S. eShop.
