Thanks for the replies, guys!
I went ahead and installed the FastenMaster IQ (actually, I'm only about 2/3 done so far). I posted in another thread about this, there is a little bit of a squeaking problem. See my post here: http://www.sawmillcreek.org/showthread.php?t=68511

Other than that, it was very easy to install, although it takes a lot of time with just two people.