If I were buying a 45 for personal use and as a collectyible, I would buy a Colt 1911. They have never let me down. I have shot them since the 1960s. They are fun,nice looking, and easy carrying pistols.
I have 7 rd mags, easy to change mags.
I bought a friend a couple of 8 rd mags for his Goverment 1911. They work fine. I am not sure one extra round makes a difference if one practices alot and shoots accurately.
I don't like extended mags as they make the pistol somewhat awkard, are more difficult to carry, and are supposed to be not as reliable.
A dealer friend was selling 1911 models made in Turkey. They looked fine but don't know how well they would hold up.
I personally would not but a Chinese made 1911 (we buy too much from China) but if that is all that is available, I would buy that as it would be better than a rock.
Best success in getting a 1911,