Having used sony devices for years now, they are all very good if only a little on the slow side especially if you have a lot of data/movies to transfer! I've just bought this HG pro and i am actually quite amazed at how fast it is as compared to the previous sticks.
The immediate difference is - Firstly my digicam loads up a lot quicker and the lag of time taken between shots on the same camera is markedly reduced... and Secondly, the time taken whilst updating with my laptop is at least twice as fast too (again with no changes other than this product).
Reality check time, the only reason i give 4 stars is due to the price. They are more expensive than most mem sticks, but i definately think they are worth it. It knocks it down from 5* to 4*, but if money isnt an issue then go for it. 2gb is a very respectable size too, and at just under 30, why not?!