I am looking to try my hand with xbow hunting after 40 yrs hunting with stick bows and compounds. I like the feel of the Parker Terminator as the one to start with. My question is the poundage selection of 150# or 175#. It doesn't seem to be much difference in the speed ratings. Some one told me that the 150# is more accurate than the 175#. I would appreciate your input. Thanks, Barry