I believe I have had this flash drive for over 2 years now. The first flash drive I ever bought was 1 GB, and I bought it for $40 (which was cheap then). Then I got this one for the same price, with 4 times the capacity.
It is certainly a quality product, and has worked fine for me over the years. It comes with U3 smart software already on it so you can set up different settings and programs to run from it. Personally, I never use this feature and have deleted it off the drive.
Some other extra things that you might or might not like are that it has a flip-cover, and it doesn't come with a lanyard. I think the flip-cover just makes it bigger than it needs to be. Since these things are pretty small and lose-able, I took the lanyard from my previous flash drive and I now use it with this one because it wasn't included.
The size is perfect, in my opinion. True, you could always go bigger, but for now 4GB is usually plenty for movies, music, and whatever sorts of files you need to transfer. The speed of the drive is quick, and I don't think I've ever had a problem with it, even when it has given me the error that I pulled it out when I wasn't supposed to.