Its funny I replaced my 1st of 2 WRT54GL's at home after a series of constant drops over the course of a last few months. Here's the story:
Internet connection is upstairs while everything else is in my man-cave downstairs. I used 2 WRT54GLs in WDS mode for about 5+ years and life was good. I noticed when I got my new work laptop (now with N) home my laptop connection dropped alot more of my network at home would start dropping. Of course the work laptop wsa the biggest culprit while I was streaming things via NetFix downstairs and/or doing other misc items downstairs. It would be a major bombshell when my buddy came over with his laptop (also N powered) and as soon as he booted up his network and attached. BAM! Network Down! At first I thought it was some kind of Dell issue (insert Dell jokes here). So after 6 months of being annoyed I broke down and got the exact Wifi product you mentioned in this article. I did read alot of people say 'it drops wireless alot' . Well I would think that would be of ANY product that you buy. There could've been a bad batch or some other item in your house really dicking w/ wireless signal (A really crappy microwave,etc.)
So I bought this buffalo router and I installed it s my primary AP while will keeping a legacy WRT54GL downstairs and attaching it via WDS mode. Suffice to say that I am extremely happy with this product. I've had ZERO drops and by god I have about 19 wireless devices I have attached to test this (Droid phones, IPhones, Wiis, 360, PS3, PCs, Laptops, and a Tablet). While doing my netflix and other bittorrent activitie I even decided to transfer some TV episodes from my laptop to my main PC. Suffice to say a 5gb transfer over wireless is painful no matter what speed. But suffice to say during the test transfers not once did my wireless signal drop. SSH Sessions and windows file copies are extremely sensative and only work on a stable connection.
Also regarding Buffallo-Tech product they are HUGE in Japan. They are the Cisco/Linksys of wireless products in Japan. I know because I go there all the time and I always dive into their electronics scene checking out their stuff.
So like star wars "What does your heart tell you". Just roll with it and test the crap out of it. You have at least a good 15day return policy depending on where you get it from. I decided to get mine via Fry's B&M just in case it didnt work and I can return it.
I'll say this I got this version and for an xtra $30 you can get the version of this that seperates out the B/G & N Channels. Just all depends on how much wireless you are doing. Also depends on your setup. If you sit at home with one wireless AP then you should be quite ok. My setup is much more specialized and needed more work given the architecture of my home.