If you're considering buying branded USB flash drives then its worth giving some thought to how you want to present these to your customers/clients. For many the standard "poly bags" that they come in are fine because they make it easy to distribute them. For others its not just about how good the branded memory stick looks but more about the overall impact they make when they are handed out. If you really want to up the anti then you should consider a presentation box/tin and even think about getting these branded.