3DS. Has just had a continuous string of great games. Sees no sign of stopping.

The Game Boy Advance for me is by far the one that gives me the best memories and nostalgia. Especyaly the SP. I still remember coming back from a Christmas family party past midnight where I just got my brand new SP as a gift and I played it in the back of the car despite being dark cause for the first time it had a screed that flashed in the dark. I felt so amazed that I could finaly do that lol.

seems like most people were choosing Best Handheld System Game rather than Best Handheld Game System... 

3DS for me! The best handheld system i've ever owned. Close second would be GameBoy Advance. 

3ds ftw!

Ok, who voted for "Other" yet failed to state which... I can't imagine what I could have missed.

The DS is first for me by far, then GBA second and 3DS next.

Not really a big fan of any other handhelds but I'd give props to the Turbo Express next - I loved that I could actually take home console games on the go back in 1990.

I have to say if you own a Neo Geo Pocket Color that start up noise will be in your mind til the day you die, it's just so fucking happy. I would almost vote for it in the others category just for its startup alone, but I only have a handful of games for it and outside of metal slug they're all mediocre :(

If it's just hardware excluding games. It has to be Vita. It just fell right in my hand. The original GBA form factor was also good with a nice battery life. I enjoy my 3DS but after awhile the my fingers suffer and the screen starts to feel small. But the XL should take care of those.

For my money, it's the 3DS. I judge them based on their full library of games, and when you factor in the Virtual Console and DS backwards-compatibility (as you should), the size, variety, and quality of the 3DS's catalog is staggering.