I've run the Monroe's before- great shock for the money, when it comes to a work vehicle. Of course I don't have anything but work vehicles right now, so I haven't played around with anything else yet! LOL!
I have bought from these folks twice now and find their prices and shocks can't be beat, free shipping to boot. The only drawback is they only sell the standard lines of Gabriel and Monroe and its not a fully automated site so all you do is call. Real nice to deal with. $25 each delivered for Gabriel HD gas. and the comparable Monroes. They also sell the air shocks for more. They did say last week that their prices have gone up slightly but will still honor the posted prices. Just look up THE SHOCK SHOP Mine were delivered from Ohio to here in NY in under a week.
Snowboy - I'm replacing the rear ones because one of them was actually rotted out(?). I just brought the truck back to the dealer I bought it from for some warranty stuff and he actually replaced them. He used the Monroes. I saw his receipt and he paid $22 each; I imagine he gets some kind of a discount from NAPA. I will probably replace the fronts myself in a couple of weeks just to keep them all around the same age. For $50 or so, it seams worth it.