AR10 type preferences?

Looking to get a new "AR10" type weapon, .308 / 7.62. Considering the
Armalite AR10A4 ( http://www.armalite.com/ItemForm.aspx?item=10A4CBF&ReturnUrl=Categories.aspx?Category=f4bd4a13-55d1-41aa-aea0-49488ec48776 ),
DPMS Panther LR-308 AP4 ( http://www.dpmsinc.com/store/products/?prod=4854 ),
Rock River Arms LAR-8 308 mid length A4 ( http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=255 )
I've read lots of discussion regarding magazine availablility and price varying between brands.
What are your thoughts? Who owns or has shot what? Reliability? Price difference? Proprietary vs. availablility or parts / accessories? Thanks in advance for your input!

If it's alright with you Cajun Friend, I would like to add anyone who has "built one." What caliber, manufacturers, specs, and how much it totaled. I'm seriously considering one for my next build, but not sure which caliber. Will probably end up with .308 for availability's sake, but the new .338 would be cool! Or one of the WSM's!

I owned a DPMS LR 308. Great shooter and I never had any problems with it. Damned heavy rifle and DPMS doesn't like some surplus ammo used in them.
Mike

I've never shot any of them, but I think the RRA has a lot going for it in that it uses FAL mags which can be had cheeeeaaaap compared to Armalite's and DPMS's proprietary mags.

I have an Armalite, and it is simply amazing.

I've had experience with all three brands and haven't had a bad experience with any of them. I think the only question I would have is what is the primary function of the rifle going to be for you? To me the A4 configuration with the 16" barrel is a good battle rifle but if I was planning on shooting for distance very much, I'd probably want a longer barrel. Just a thought.

I want it to hunt!

I have an Armalite AR-10 that was tweaked for long range shooting, though it's never been past 300yd. (I've never done more than zero it and plink in its' two outings. ). But it shoots like it has some *real* potential--< .75MOA so far with 5-shot FGM 168 OEM ammo.

I bought it about 7 years ago, before the other brands came out in full force. Today, there's a lot of accepted brands, DPMS, DD, RR in the AR format, and some have broken out big in the '10 field, but one that is really making a big name and getting rave reviews is Patriot Ordnance Factory, partly because their gun isn't an impingement mechanism, but a gas piston gun.

If I was thinkin' about an AR-10 today, it would be one I'd consider very heavily vs. the Armalite design, and I dunno how I'd make my final choice... mebbe sentimentality would win out--it's for sure I ain't unhappy with an Armalite in the safe, but I dunno that I'd be as happy with a DPMS, Eagle, RRA, etc. It'd be like buying a Kimber instead of a Colt to satiate a lust for a 70 Series 1911.