I'm new to the AR platform as well, but have spent countless hours researching them. I bought a PSA M4 Premium 2 days ago. It was on the rack next to several S&Ws, DPMS, and a RRA Elite operator. I liked the RRA but it had a 1/9 twist. PSA was a carbine I had thoroughly researched and was ready to purchase before Election Day if available. It was so I did. DPMS was just something I personally wasn't interested in, nor were S&W or Bushmaster. Not that they wouldn't have made good guns, I just wasn't wanting one.
I will eventually purchase a Colt M4A1 SOCOM. Not because I believe it to be any better than other manufacturers or than my PSA, but because I have been slowly collecting various firearms that I can afford. I want the Colt for my collection. I, again, I believe the value will increase like many other Colt, S&Ws, Winchesters, etc...
I don't know why it concerns me though. I never sale something once I purchase it anyway.
Again, I'm still very new to this, so I'm still trying to learn the different marks on the Colts. Another one of the many things to learn in this hobby/obsession.
So I guess in a long winded reply, in my situation, if I would of had the money, I would have bought the Colt before they jumped up in price and I couldn't have gotten one. Which still may happen, but at least I got an AR that I am very proud to own in the PSA.