Reply To: Headshots are good.. but for a springer.
I concur with skygear, if fast accuracy is your main goal a pcp, tank(scba preferable to a scuba) and good scope are the way to go.
I read your other post and I think you can be very accurate with a quality springer and good scope as well.
Of course if you want to use your rifle for field target, hunting, and want to take small game at 60-70yds or less a .177 pcp is your best bet. Just remember you have to have a place to fill your tank near by(either near your home on your commute to/from work) or get yourself a hand pump.