Nope, I've just got an SP. What encouraged me to get it is playing with a friends GBA. I was amazed with it, and then once I saw that it looked MUCH better with the SP, I was glad. But you still have that little bit of 'washed out' look when playing it.
If you want to go outside and play a game, I suggest Boktai, you can kill 2 birds with one stone. Play the game (it has a sun sensor on it, and thats how you power your weapon), and see the screen!