Thanks for the info! Yes, Bilsteins appear to be the favorite around the web from what I can tell. I went ahead and ordered a set of 4 of their 4600 HD models. I got the complete set for $282.00 shipped, so I thought that was a pretty good price. The concensus I've read is the 4600's for a stock suspension, are just as good as the 5100's. So given they were a bit less money, I went that route. Hope to get them this week and install them this weekend.
I'll post back once I do!
Thanks again for everyone's ideas. Hope the new shocks help the issues I've experienced.
