So what I'm really asking is, what are the pros and cons?
Oh and will it work with a R4?
And can someone give me sites who resell this product?
Well, the G6 Lite was my first DS Flashcard, and it was really sweet back in the day, but I can't wholeheartedly recommend it for what you want to do. I like it for the reasons you'll probably read in the reviews here: It can fit in the DS or GBA depending on which casing you use, it has almost flawless compatibility with GBA alone (not to mention DS) plus it loads faster than the Ewin style solutions...plus it loads on its own from the DS menu in GBA mode without the use of a passme or anything.
But there are a few cons:
-G6 requires a special USB attachment and special windows app to transfer over roms, as opposed to using an EWin and copying files to the MicroSD.
-The Icon library is not always up to date and doesn't always auto-recognize games by their title/checksum.
-Cheating is difficult, unlike Slot-1 extensions, which usually allow AR codes.
-Size of library is limited to 512MB, unlike Slot-1 with MicroSD.
-G6 forces you to load from a useless Multimedia menu instead of going directly to the rom listing.
If you don't mind waiting the few extra seconds to patch and load roms from the Slot-1 device, I'd go that route.
Am I the only one experiencing an icon bug running in GBA mode?