How is the XBOX 360 Pelican Wireless Gaming Network Adapter?

I need wireless internet for my XBOX 360 and i was wondering if anyone knew how well the XBOX 360 Pelican Wireless Gaming Network Adapter worked? Is it as good or almost as good as the official wireless adapter? Its $70 cheaper so as long as it doesn't cause lag while playing online it would be worth it. So does anyone own it want to tell me how it performs? Thanks in advance.