I had planned on spending all of this money for a "higher end" filtration system. Funny thing is, these things seem to be just as susceptible to shortcomings as less high end units. so honestly... I think I might just go with what I know... two or three power filters (many say ACs, but I am partial to Marineland Emperors), and maybe a sponge on the inside. way cheaper, less worry about a large investment, only to encounter the same issues anyway. and since I am only going to have 5 adults in a 125 gallon in the beginning... no huge bioload. my water change regiment will still suffice.
this has been a very interesting debate... I have to say. very good information here.
-Rich