about acquisition,it's the collector duality...
-choose a "not to bad" choice,to have something in collection...then,obtain a average quality specimen.
-wait for perfection,that may never come,and keep a flawless dream in the head,or something that could do the job.
With experiment and knowledge,I think everyone begins with average stuff and try to increase for better stuff,more detaled,more accurate,rarer,or vintage.
It's not easy to be greedy as a collector,especially for a beginner.
As far as I remember,this is how I do:
-I discover a leisure,and I buy,with a few knowledge only
-then,I own,and own more,time for buying what can be bought...and in the same time it's time to see what exists,and I begin to see some differences.
-then knowledge and experience help to choose the best,and be very difficult with new items,and it makes me sell the first items I bought...
-and when the hobby "dies",when it happens,I mean,when I stop the collection,because of place or money,I keep only the knowledge,and I am happy to see similar items some years later,and it's time to share memories.