Can you give me an example of when it doesn't find the results in a search but you can browse the tracks and find it?
As for quality USB drives, I love my Patriot RAGE XT USB drive, it has serious performance and the price is pretty reasonable. I also found good speed and reliability with OCZ drives. I wouldn't yet get a USB3.0 myself (because I don't have any USB3.0 ports in any of my computers).