I've dropped at Stewarts a few times, but never really hung around to check out their set-up.
I always thought Sadler's was more axles and suspension. IIRC, they had the best price for leafs for our 3500HD (my boss likes Blow-ties), and if I don't do it myself, they'll be doing the seals and bearings in my differentials.
I'll have to give them a call next week.