I just got Afterburner II - good port with some nice display and control options. Even the circle pad add-on is supported, but not sure how that would be used for this game.
Speaking of the circle-pad, I'm assuming any game that supports the it automatically supports the C-stick on the new 3DS, right?
Amazon doesn't have the new 3DS for pre-order, and on-line Best Buy and Gamestop's delivery estimate is the following week. So I'll probably take my chance with picking one up on launch day from BB, Gamestop or Target without the pre-order. Gamestop is currently giving $80 trade-in for the current 3DS XL, but mine is in such good condition and I still have the box and everything, so I might throw it up on eBay. It is currently trending around $135, but that price will probably drop once the new comes out.