Well you made the same mistake i did, i probably should have used the search button before i start a Question thread ( I made one with the same question). I ended up getting an m3 real with an 8gig micro. im pretty sure the majority like m3
I wouldn't say majority like M3 real tbh ... R4DS with 1 or 2Gb is prolly the cheaper option and good enough for most ppl - If you need loads of space for mp3s and video then M3 real with 8Gb is a good option. I have other things that handle all that and only use the DS for playing a few games and occasionally surfing the net. It doesn't matter how many games you have on your cart - you'll likely only be bothered with a few - I have 50 on a 2Gb card and that's far more than I play. It really depends on what you want to use it for. Decide that and buy accordingly.