I'm thinking of getting a DS in which case I'll be selling my Zelda Golden (painted) GBA SP. I wouldn't be getting a DS game for about a month after that (better to sell now to make more cash). So I'm wondering, What are GBA games like on the DS? Better Quality, or worse? loss of functionality? 100% backward compatablity? Or am I just better off keeping my SP and the buying a DS after a big price crash?