Summary: I have been using a WRT54GL for 3 years running DD-WRT with absolutely no issues whatsoever. I was looking to upgrade my home netowrk to wireless N, and get a bit more range and speed, so I figured that this was a logical choice based on my good experience with the previous Linksys devices. I loaded the router up with the newest reccomended build of DD-WRT from their site, and it seemed to work as advertised, except that I had no range improvement whatsoever.
Summary: I bought this to replace an ancient WRT54GS whose radio finally failed, with the intention of putting OpenWRT on it. I was a bit worried since the OpenWRT wiki lists this router as a work in progress, but it turns out the recently released Backfire 10.03.1 works very well, and my router has been quite stable for about a week now. Installation was trivial through the OEM web interface.
Summary: Router worked ok for more than a year when there aren't many devices. When the device is fully populated, it can't handle it. Drops wireless connections, and even wired connection deteriorates. I expect these devices to work fine for definitely way more than a year.
Summary: Bought this for my parent's concrete house, so range was an issue. Router needed to be placed on one side of the second floor since that's where their internet drop is located. The signal reaches strong throughout the 3-story house, through all the concrete walls, and outside as well. I bought an extension cable for the antenna but it wasn't necessary, the range is great as is. The setup is bearable and relatively quick.
Summary: The installation was very easy. I successfully connected it to to WD elements portable 500GB disk, NTFS formatted, just to see the storage link performance are VERY poor. Even DIVX file it couldn't run flawlessly to a wired connected desktop (not even wireless). I will look more if there are more parameters I can adjust. The bottom line I chose this Router because of it's storage link, and so far it is disappointing.