Pst? Firmfeel? Hotchkis? Worth it?

Hey everyone im heavily considering redoing the front end on my 73 swinger again soon, ive been reading a lot in mopar muscle about the hotchkis stuff, then i started to do some more research and have found a few things i wanted to run past the forums here for advice. Hotchkis, PST, and Firmfeel all offer what seems to be the same quick ratio steering kit with a new pitman and idler arm to cut lock to lock steering down to 2.75 turns instead of 3.5, question is there truly a performance difference between them as all three manufactures have different prices.
Next question is PST and Hotchkis both offer similar front end kits, tubular upper arms, adjustable strut rods, torsion bars, sway bars, ect... again is there really a performance difference because the prices on these items are vastly different. Cause if there is not a huge or true performance difference i would much rather save almost 400 and just buy the PST parts.
Final question is firmfeel makes the high performance gear boxes, has anyone ever used or driven one, is it really a huge difference? the person over the phone compared it to a early 2000 BMW 3 series feel, is there any truth to this? what should i really expect?
Thanks for all advice and any input I need it or else i have a feeling Im truly going to spend more cash than needed