Whilst, in general, memory sticks basically do the same function, the Sony Stick excels in the field of allowing fast and reliable transfer of data. I was given this memory stick as a birthday present last year and I have to say, it has been the most reliable and needed piece of technology I have ever had. Unlike most memory sticks, the Sony Micro Memory has the ability to very rapidly transfer data from PC or vice versa. It is light in weight and can be clipped to a tag or neckpiece so it cannot be lost. It features a 4gb memory which is more than adequate for large file transfers of word documents or media files. I found that the memory stick could carry 6/7 full movies and could transfer these data pieces within a minute which is the fastest I've seen.
I was using a 3gb Data Traveller before using this memory stick and the difference was staggeringly clear. Sony yet again excels in its technical boundaries to deliver a much needed and reliable device that operates on all windows formats and recent apple formats.
The one downside to the product is that it costs anything from £50-80, but if you search around and look at auction sites, you'll be sure to find one for around the £40 mark.