well some palms hve color screens (the "c's"😉 some the 7 (IIV) have built in wireless modems, the v's and Vx's are styled differntly , the Vx has more mem, the m100's are least power full for college kids or poor deperate executives, the handsprings have a gameboy like add on slot on the back, and the ones designated pocket pc's (but are usually more than 500 bux) are 486's in your hand