mark's stuff is nice but you don't NEED adjustable arms,unless you like the look of the turnbuckles and having no bump stops that bang into the frame when you jack up the front of the car..with the spohn arms you're not gaining anything,they're just tubular copies of the stock ones w/different bushings..there's no geometry gain or alignment gain to be had so why bother.
umi is more money but they've done their homework and there's gains to be had there.it all boils down to what you're looking to do/spend with your car.for shocks,my money says for the best NON adjustable is bilstein.