It's funny how easy it is to say that others don't get their facts straight but yet not prove anything either.
We certainly all have a different experiences, we have slightly different setups and I won't make any generalities but here are "my" facts.
I purchased a WZR-HP-G450H because of its "high power" and 3 antennas as well as its firmware.I was hoping for better coverage, better performance (transfer speed). The result was that the WIFI coverage was worse than when using the AT&T uverse modem/router. I lost signal in my bedroom and other parts of the house.
I upgraded after having used a Belkin dir-825 for a little while (the belkin has a much better coverage but the firmware is limited and I had it crash/lock on a regular basis).
I ended up boxing the G450H and bought the Airport Extreme.
Since then, not a single problem, great coverage, great speed and I just have to worry about anything. The software for the router isn't that great, but it gets the work done and last time I was as pelased by a router was when I got my first Linksys.
If you think the G450H is such a great device, I'd be glad to sell mine which I plan on never using anymore (unfortunatelly I waited too long to realize I just needed to get rid of it, and I can't send it back to Amazon).
- Matt