I had some fairly good experiences with the Nevo & Dlink DSM-320 after initial pain. The system didn't appear to like static IP addresses, and was a bit picky about the brands of routers. Oh, and don't even think about running the dlink on 802.11b.
Having said that, I would not sell that combination to a client yet, as it wasn't perfect, both units often having to "think" for a few seconds.

PS- the Dlink user interface has some real niggly issues, I sold mine and got an Imerge.