The Sony Clie PEG S300 is one of the best pdas out on the market at this point with the expandablity the sky is the limit it has every thing from a memeory stick slot to a wireless modem which works very well thre is also a wited modem item name MD-700 which enables u to check ur email on the go in a hotel room or a relitives house all around the sony s300 has the most bang for the buck i would rate it on a scale of 1 to 10 i would rate it 20!!! nice pda i own one myself.