I did a lot of research on portable flash drives and memory sticks before buying this one and I'm happy I did. I have had no problems or compatibility issues using this with both PC and Mac. It's so easy to use: plug it in to a USB port, copy files onto it, dismount it, unplug it...done! I opted not to get the security software version of this stick because I heard that it caused a lot of hassles and I really don't need the security. I love how small and portable it is. The lanyard is handy if you want to wear it around your neck or even just to pull it out of whichever pocket it's in. I have no problem with the removable cap not being attached to the drive because I'm careful to keep track of it and/or keep it on the Gizmo! It reads and writes very fast. The 2GB of memory is more than enough for my purposes and for this price I think it's a great value.