I've had good luck with MOOG problem solver (all part #'s end with a T) and also more recently Raybestos professional grade parts (the ones with the blue boots) supposedly made by Spicer. Some people seem to like PPM as well, but since I have no experience with their parts I can't compare them. From what I've seen so far the Raybestos PG ball joints and tie rods have a far better design than MOOG PS or anything else available. I'm giving them a good workout on my 88 S10, so far so good!
2005 ZR2 Blazer / Mods- Spectre CAI, Descreened MAF, Shaved Throttle Blade, 31" Goodyear Kevlar MT/R's, Black Rock Rims, MSD Street Fire CDI & Super Conductor Wires, Accel Cap, Rotor & Coil, Flowmaster 30 Series, Gibson Tailpipe, ES Bushings, Goodridge Brake Lines, Power Slot Rotors - 1996 Impala SS / Mods- Too Many To List - 1988 S10 Blazer / Mods- Too Many To List - 2001 S10 Crew Cab 4x4 / Mods- Too Many To List *Wrecked 12/06*