49% of US Internet users who plan to purchase a portable gaming device want a Sony PlayStation Portable (PSP), according to Parks Associates. PSP is in a good position to challenge the other devices in the portable gaming domain, especially devices from Nintendo, the current market leader. Gameboy Advanced and Gameboy DS, both from Nintendo, scored only a combined 33% among U.S. Internet users with purchase plans for a portable gaming device. Nokia N-Gage lags far behind with only 4% of future planned purchases. PSP’s sleek, sexy design and support for music and video playback bolster its already strong appeal among gamers older than 18.