I think the biggest problem with newegg and even reviews from people across the web including avs forum is the difference in level of expectation. Let's be honest, how many have heard a 1k - 3k audiophile level subwoofer?
I would guess that most people haven't heard subs on that level, so when they finally hear something like the Bic F12 or PSW505, which is a substantial step above the cheap HTIB subs, they are blown away and easily satiated.
I knew when I bought the F12 that I wasn't going to get audiophile level performance out of it, but I knew it would be a huge step up from the garbage HTIB subs which I've dealt with.
As for those newegg reviews, you can anticipate that a big percentage of reviews are from people that don't know what a high end sub sounds like. So their excitement comes from having no other level of reference to compare to. So you can interpret those reviews in light of that observation. The other thing is that everyone has a different set of trained ears, some of us, coming from no audio experience, to others who have audiophile ears.
The people who complain about the F12 here, I actually commend in some ways, for having a high level of expectation. Their suggestions for better subs are things that I keep in the back of my mind when I consider a future upgrade. But the ones who complain that a 183 sub doesn't sound like an high end audiophile sub, well yeah, you're going to have to spend more to get more.
In the end, I think we are all looking for that sweetspot, where price and performance meet to give the best value.