I'm really not sure right now. Based on some feedback from some other friends I'm leaning towards a Busmaster or S&W(Stag). Any advice on specific models? My big requirements are, adjustable stock and removeable carry handle. I'm a little old school, so I'm not really looking at any with the carbon fiber receivers.
I think you're on the right track in desiring an adjustable stock and avoiding the carbon fiber guns. Bushies and Stags are good guns. I chose Rock River Arms because they won the large contracts for both DEA and FBI. I figured both of those agencies know a thing or two about what makes a reliable fighting carbine. I settled on the Entry Tactical, which can be seen here.
http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=217An unforeseen plus in favor of the RRA is their two-stage trigger. I didn't realize how much a difference it would be until compared side-by-side with a couple of other AR's with conventional triggers owned by a friend. He was equally impressed, saying the RRA trigger was very comparable to the expensive Jewel unit installed in his match AR. He was so impressed in fact that his next AR was a RRA after years as happy owner of several black rifles from another manufacturer.
I strongly recommend sticking with a chrome lined barrel. I'd opt for the lightweight 1-in-7" configuration.
My Entry Tactical was ordered with the detachable A2 carry handle but I quickly switched to a folding BUIS/EOTech holosight combination. To be honest, if I ordered another AR today I'd opt for no handle at all. IMO a carry handle is quite limiting.
Whichever AR you settle upon, I suggest getting a good sling mounted as soon as possible. It really makes a big impact on any gun handling beyond slow fire off a bench. I chose a Marom Dolphin Sayeret sling from Israel, seen here.
http://www.zahal.org/rifle/p26.htm It's issue for the IDF. Mine is top-mounted like the Israelis do, which allows a lot of versatility in carry options. I purchased mine from DSG Arms in Fort Worth.
Stock-up on good magazines. I've had excellent service from AR Stoner 20- and 30-rounders from MidwayUSA. These are actually C-Products mags with a proprietary MidwayUSA floor plate stamping. Great reliability at an affordable price. My friend mentioned above has also had good results with Magpul PMAG's and Brownell's.