By "all-in-one" I mean getting enchanted with hacking support, especially with emulators and homebrews. Like a GBA with a Supercard, or a DS with a R4, or a PSP with cfw (these are just examples). What's your pick?
There is no budget limit. I was curious to see what would be your choice including power and compatibility.
Personally I'm unsure between the Micro and the DS Lite. I like my Go, but the buttons suck compared to the ones on my DS Lite. On the other hand, the Micro has a ton less power, but it's the most portable thing ever.
I was thinking of getting one of those (used). How do you feel about the screen size?