Purchased these last week (from here) and received yesterday; however after playing MW2 all last night I didn't find a massive difference. Apart from OPEN NATs which was a benefit but not enough to sway me to keep them.
I am only using a 100mps "G" router which i feel is probably holding these back from performing.
Only looking for my money back - £38 delivered to your door.
Can post tomorrow if payment is made tonight. :)