Has anyone since getting a 3DS decided to buy another DS? I've been looking around for a DS Lite so I can play GBA games and DS games that require or can use the GBA slot. But DS Lites aren't cheap, and I'm considering just waiting because the eShop could have GBA games. What do you think I should do?

Buy the original DS.

Or a Gameboy Advance even.

3DS plays DS games.
If you want to play GBA games buy a Gameboy SP

I'm still using my DS Phat for GBA games. B-)

The buttons feel better for me when compared to the DS Lite's buttons (and those L-R buttons...ugh).

I've still got my DS Lite but I'm looking to sell, perfectly happy with playing original DS on my 3DS.

Buy an SP. They can go for 50 nowadays, EASY.

What GBA games are you looking at? Buy a GBA SP or NDS original.

Well, theres always Ebay and Amazon. If all you want to do is play GBA games, then get a GBA. Good Luck!

Buy a gameboy micro, and a wrist strap.
Connect GBM to 3DS and PROFIT.