USB 2.0 Flash Drive(Thumb Drive) Recommendations/Opinions

I’ve been getting tired of d’loading stuff and redoing an RW all the time and thought I would look into these little Flash Drives.Not any one in particular but was wondering what luck if any of you have had with these little things?Are they reliable or are they junk?Any brand better than any other etc…?I remember them being like $300 or $400 a year or so ago.They’ve come down quite a bit now and I thought I would inquire.