I have the dj's packer, and yeah, it works... after some getting used to. It looks really realistic, and it's comfortable to wear. I'd go with that... I checked out the mango one before, but it didn't look the slightest bit real, and it's about 15 bucks more. I'd go with the dj's one... and if you have any problems, as I did, dj is a pretty cool guy, and will always respond to emails to help you out.
Rafe