Sony MS-MT8G Memory Stick  

well when it coems to flash memory then i think it is sony who rules. they have fast speed of data transfer which is the best among all its competitors. then it has the reliability. i have personally never heard any one complaining about the same. the price may be a bit high but then if you want quality why are you thinking so much about the price. it is in the end going to b a good deal in any way.
i used this for my camera and it worked great. and also i used to take it to my friends house as a storage device with my card reader.and you know what it woks great as a flash drive also and when you see the speed a t which it transfers the data you will start to like it a lot.:P
all in all i think these are multipurpose sticks and it is always better to have them instead of the flash drives. well that is my way of looking at that. different people have different views.