My current setup I've got to tell u...I love so much but lemme tell u my dilemma. I've got a 98 Grand Prix GTP with 5.25" doors, 6x9 rears, 4" rears. I have an Alpine CDA-9831 deck, Boston Acoustics Pro60 in custom kick panels, nothin in doors, Polk Audio db690, Boston Acoustics S45 all ran by an Alpine PDX-4.100 and a Boston Acoustics SPG555 ran by an Alpine PDX-1.1000 with all Rockford Fosgate wiring and it sounds GREAT! The problem is I'm starting to notice myself accidentally kickin my Bostons because I have no leg room. Now before u say anything I had to try out the kick panels myself after I've seen them in so many show cars. I have to take out the Bostons before I really hurt them and there's my $550 down the drain. So anyways I can't afford the SR's so the next best thing (and very affordable) was the MOMO's. Do the MOMO's sound any better or about the same as the Bostons? What's gonna be the difference in the tweeter between the Polks soft and the Bostons aluminum? Some people don't like the sound of the Bostons tweeter but I think it sounds great. Will I not like the Polks if it's more laid back than the Bostons? All in all something has to be done before I end up damaging my speakers.