So these are the current handheld gaming devices (except Dingoo A320 and GP2X) above in the topic tite. Which is best? (Of course, the iPhone and Zune HD are the handheld gaming devices.) Here's a comparison: Pricing (all are in U.S. dollars) PSP: 100 to 200 dollars for older models 170 dollars for PSP-3000 (a.k.a Brite or Bright) series (130 U.S. dollars in Japan) 250 dollars for PSP-N1000 (a.k.a. Go) series Nintendo DS: 130 dollars for Nintendo DS Lite 170 dollars for Nintendo DSi iPhone/iPod touch: 100 dollars for iPhone 3G 8 GB model 200 dollars for iPhone 3GS 16 GB model/iPod touch 8 GB model 300 dollars for iPhone 3GS 32 GB model/iPod touch 32 GB model 400 dollarsfor iPod touch 64 GB model (NOTE: iPhone 3GS and 32/64 models of iPod touch includes a faster processor, which also improves web browser's (Safari) performance. Applications using a faster processor cannot be run on iPhone 3G and 8 GB models of iPod touch.) Zune HD: 220 dollars for 16 GB model 290 dollars for 32 GB model Screen PSP: LCD screen, 4.3 inches (16:9 (widescreen) aspect ratio) for the PSP-1000/2000/3000 series (I'm not sure about the PSP Go's screen in inches) Nintendo DS: LCD screen, 3 inches (4:3 aspect ratio) for the original Nintendo DS/Nintendo Lite and 3.25 inches (4:3 aspect ratio) for Nintendo DSi iPhone/iPod touch: LCD screen, 3.5 inches (14:9 aspect ratio) Zune HD: OLED screen, 3.3 inches (16:9 aspect ratio) Case customization PSP: No? Nintendo DS: Yes iPhone/iPod touch: Text engraving from Apple Store Zune HD: Yes Built-in camera PSP: No (NOTE: there is an PSP camera add-on with about 1.2 megapixels, pictures only.) Nintendo DS: Yes (Nintendo DSi only), 0.3 megapixels, pictures only iPhone/iPod touch: Yes (iPhone 3G/3GS only, not iPod touch), 2.0 megapixels for iPhone 3G and 3.0 megapixels for iPhone 3GS, pictures only for iPhone 3G and pictures and video for iPhone 3GS Zune HD: No Touch screen PSP: No (Not sure about the touch screen in PSP Go) Nintendo DS: Yes (with stylus) iPhone/iPod touch: Yes (without stylus, thanks to 'multi-touch') Zune HD: Yes (without stylus, thanks to 'multi-touch') Built-in microphone PSP: Yes (3000 and Go series only) Nintendo DS: Yes iPhone/iPod touch: Yes (not on iPod touch, I believe) Zune HD: No Accelerometer (when you turn or rotate the device) PSP: No Nintendo DS: No iPhone/iPod touch: Yes Zune HD: Yes Game media PSP: Universal Memory Disc (UMD) (download-only for PSP Go) Nintendo DS: Game Card iPhone/iPod touch: Download-only Zune HD: Download-only Number of games/applications available PSP: about 3,000 Nintendo DS: about 4,500 DS games (excluding DSiWare game for the Nintendo DSi) iPhone/iPod touch: over 75,000 Zune HD: 15 Video output (when you connect to a television) PSP: all video modes (PSP-2000, 3000 and Go series only) Nintendo DS: No iPhone/iPod touch: 480p (NTSC) or 576p (PAL) standard definition Zune HD: 720p high definition Built-in Wi-Fi PSP: Yes Nintendo DS: Yes iPhone/iPod touch: Yes Zune HD: Yes Online store PSP: Yes (PlayStation Store) Nintendo DS: Yes (Nintendo DSi only) (Nintendo DSi Shop) iPhone/iPod touch: Yes (Apps Store) Zune HD: Yes Content available in online store PSP: Games, movies/films, TV shows, themes, game trailers Nintendo DS: Games and non-game applications (Nintendo DSi only) iPhone/iPod touch: Music, podcasts, TV shows, movies/films, audiobooks, applications Zune HD: Music, podcasts, TV shows, movies/films, applications Speakers PSP: Yes (2) Nintendo DS: Yes (2) iPhone/iPod touch: Yes (1) Zune HD: No And that's it. Vote for the poll which system is the best.