I have yet to switch my car over from the leaves but here's my take after researching the options. I personally don't like heim links on a regular driver, to much vibration transfer and they're open to the elements.. I'd prefer poly bushings. As far as tri vs straight 4 link I don't think there's much difference except the tri gets rid of the need for a panhard bar. My other observation is all the kits are meant to be bolt in not correct, ideally the top and bottom links should be equal in length not a stubby upper arm but obviously many are running these setups so they must work fine so maybe that's not so important?? When I do switch mine out I'm going with a torque arm setup, to me it's a easier fit and very simple. I'd also look really hard at how the different kits fasten to the chassis, some have small coilover bars, others have cheesy ways of mounting the upper tri bars.. pick out something that looks well thought out and avoid problems down the road.
