I shoot a High Standard, and if you can find a used one from their old factory in Connecticut and the price is in your range, jump on it.
My bullseye league has several High Standards (old ones made in CT, no new ones from TX), some 1911s with .22 conversions, a Hammerli or two, a Walther or two, several Rugers, and several S&W M41s.
I haven't seen any Buckmarks, but the story I heard is that one of the top shooters in the state got started with a Buckmark and shot it until he needed a more accurate gun, so I'd say you can't go too far wrong with a Buckmark.
Whatever you get will need adjustable sights, don't forget. You'll soon be shooting well enough to need to move your groups around the target.
Have fun!
-J.