So I'm about to finally dig into my complete suspension upgrade on my 1968. I have a full global west front going in with new upper arms, lower arms, tierod adjusters and strut rods. Springs are progressive rate from pro-motorsport, shocks are edelbrock, spindles from a 1970 and cobra automotive made the new boss-style crossmember. All bushings are midolyne. I need to order new saddles; Question is do I go with poly spring saddles or roller? Is it worth the extra $125 for the rollers? How much is going to effect ride quality? Thanks for the input.