i rode in a 3 link car this last week at an autocross- very impressed. ive got lots of experience racing and street driving my car both with a 4 link and IRS. 4 link sucks so bad compared to the other choices. its fine for tooling around town, and never broke. performance wise there is absolutely no comparison.
FFCars member #9 - FFR 1630 http://thevenom.net
351 V8, 302 V8, Renesis, whatever's in a Murano