Lol it's not assumption little guy. Suspension is only half the game. Tires, driver, & conditions make it a whole new ball game. I'm not knocking your set up. If you like it then its perfect. Personally, I'd rather have something up front that is just as good as the rear and designed together. Are your rear shocks valved for that spring rate? Because that's what you get with a kit. For $550, is it a good set up? Maybe so. Is it worth $300 now? Probably. It's like buying replica wheels. They do the same thing but in above average conditions & resell, one obviously shines. It's all personal preference & in the end, I'll pay if I choose to.
1995 325i 5mt ArcticGrey/Dove - SOLD
2004 330ci ZHP 6MT SilberGrau/Black - SOLD
2001 330i M-Sport 5MT StaulGrau/Grey - SOLD
1992 Accord LX Sedan 275k miles all original - DAILY
2002 Chevy Suburban LT Autoride - TOY HAULER
2005 GMC Sierra 2500HD SLT - RACE TRUCK!