I have never been happy with my G6 since I got it.
I've had problems with the buggy software. Sometimes it crashes on me randomly and corrupts my entire card, I often have had to reformat the card through their nonsense proprietary utility (which seems to do who knows what, because the cart appears to be in FAT format)
The same system is absolutely ridiculous. It creates three save files, .1, .2, and .3. Plus, short filenames are used and it doesnt name files based on header information. So lets say you have the three castlevania GBA games on your cart... well, depending on how you add them to the cart they'll correspond to different castle~1.1 files. There's no reason they cant read rom headers.
The button, what is with the button? I've never, ever had to use it, yet I apparently almost always accidentally had it pressed down and it killed my battery. Nonsense.
Their software is not often updated, and they have a "contact us" page from which I have requested many reasonable features such as drag and drop, I never received a response from them.
Different versions of the loader back up roms and .sav files differently. I lost GBA saves I've had for years because I updated them with new .1 files which the new loader could not even read.
I have not experienced it with the newest version of the GBA loader, but I also haven't seen it in the update log, but on the previous version of the GBA loader it used a graphical interface where there were thumbnails for each rom, except that some rom files would make the entire rest of the screen unreadable garbage data, making the interface unusable.
The GBA loading time is ridiculous. I have an old EZFA and it can load files immediately, I dont understand why it takes 10 seconds to load a 32Mb file.
I cannot recommend a G6. I have fought with it to get it to work, I've had it since the first shipment from kicktrading. I cannot recommend the M3 simply because it has anything to do with this ridiculous and clunky product.
I am currently looking at replacing my G6 with an EZ4.
typical g6 newb. i was like that too when i got mine. UPDATE THE FIRMWARE and you get one save file, that u can back up to others if u wish. u can also put commercial nds games in the nds slot and backup saves to the g6 FROM THE g6 ITSELF! it is amazing, and only people who use it oob dont like it.
o yeah. g6 gba saving = amazing. the software to write roms adds a patch to the roms that allows instant saving whenever, wherever you want. its so sick!