Brand doesn't matter much. Some manufacturer gives limited lifetime warranty and some gives 5 or 2 year warranty. Check before buying. Also, make sure you buy USB 3.0 pendrive. USB 2.0 pendrives are slow where, 3.0 pendrive are much faster even if you connect in USB 2.0 slot. If your house doesn't have ground connection (earthing) then avoid buying metal pendrives. It can give you electric shock.