Hi all- A few weeks ago my wife shot an AR (somebody in another bay offered). She kind of likes the platform, and while it never did much for me previously that she likes it is as good a reason as any to get one out and make it our own. That prices are a lot less odd than about a year or so ago makes it a good time as well. I've been doing a LOT of reading, handling, and discussing with various individuals (friends, owners, gunshop employees, assorted experts) and am reasonably comfortable that I sort of understand, in general, the options before me. I would like to stay toward the budget but not low quality end of the spectrum. I have found nothing bad about the Core15 M4 (not the Scout), and a local dealer can get me one for $650 plus tax ($690 OTD). The interested can check the specs (please do and advise me) but things I noticed included the chrome-lined barrel and stainless bolt carrier. It appears not to have a rear sight (though their page shows it is "optional"), but I'm starting to see that this is not uncommon given the apparent tendency for the AR to be configured a lot of different ways. I was fairly ready to go for this, but then came across a Palmetto State Armory rifle on Armslist that the seller says is un-fired (no basis to assert otherwise at this point), asking $750. From what I can gather, it is their PSA Premium M4 Carbine, save for one difference - a stainless steel barrel. When I asked, he said it was most like the premium (linked above) but with the stainless barrel. At this moment, all I have are 2 pictures from the ad and what the guy said in email). Obviously if it gets serious I'll need to look at it. The big difference at this point appears to be the stainless barrel. Is that a $100 difference, all things equal? Are the platforms equal other than that, or is one of them "more equal" than the other? Am I missing something obvious? At any rate, here's the specific question. New Core15 described above for $650 plus tax or not new (but apparently not very if at all used) PSA with a stainless barrel for $750? Please avoid the standard (for some) "skip both and get you a Colt" comments - 1K is simply not in play. I may end up going for neither, but from what I have seen these are both good budget platforms so this is the option on the table at this moment. Thanks.