I do not really have a Top 10, but here it goes:
- Nintendo Gameboy Original (man, with the Lightboy and Soundboy attachments, it weighted bricks)
- Nintendo Gameboy Advance SP (cute little clamshell device, super convenient)
- Sony PlayStation Portable (so versatile, runs so many emulators, it's beyond belief at that time)
- Sony PlayStation Vita 1k (love the machine, it's screen, its overall feel, but sadly the game selection can be more)
- Nintendo 3DS XL (finally a decent sized DS, but a year+ after I got it, Nintendo announced the NEW 3DS...Well, still hope Nintendo will eventually get on the HD screen bandwagon)
- Tapwave Zodiac (a palm os device, in the days of handspring treos, blackberries, Symbian phones, the Zodiac was like the future, a PDA that could be a game device.)
Honorable mentions: Gameboy Color, PSP Go, Nintendo DS Lite, Gamegear