FWIW - if you care about re-sale value, buy the highest condition you can afford and make sure you don't diminish that condition.

So, if you buy truly ANIB examples, you may not be shooting them, but a 95% gun you can shoot some and still retain value.

If you want to shoot a lot, get good mechanical condition and have at it.

Once you get 40 or 50 guns or more, you can shoot them all a little and never worry about condition degradation.

Just my .02