Best ifs kit? rms, hdk, gt suspension, or magnum force?

Curious which is the best kit out there, I want room and better handling, need some insight from guys running an ifs. Thank you for the input my fellow fabo members!

OMG..... asking opinions like that on here is like asking what's the best steak....everybody has there favorite, even though they know nothing about the proclaimed facts there telling you, some opinions are from members who haven't ever ran them to compare or even have a car for that matter. Some opinions here are defiantly useful but Talk to the Manufactures yourself and base your own opinion before dropping that much coin. My vote is for the HDK. Just wait your going to get the die hard pipe in and tell you there all a waste of money and a stock setup can be just as good, which is not what you asked but it happens over and over every time this question is asked, then comes the name calling and were all of the original subject. Good luck.