Just replaced DIR-655 by DIR-868L today, and it maximize my broadband speed.
My broadband was upgraded to 1000Mbps recently. And I was using DIR-655 and facing the "bandwidth cap" issue. My old post:
http://forums.dlink.com/index.php?topic=54225.0 After upgraded to 868L, i did the download speed test, the result back to where it should be, no more "bandwidth cap" now.
Beside the nice throughput of 868L, I found the wifi signal penetrating power is stronger than 655 too.
I would definitely recommend this product to anyone who use a high bandwidth broadband.