I always shoot a firearm before I buy if I'm unfamiliar with the construction/capability of a certain model.
my buddy let me shoot his pt 92,and I loved it and bought one for my wife:)
the taurus pt 945 is nearly the same style construction etc,and I found a great deal so I felt comfortable making this purchase.
try renting one at the range and see how it feels and how it shoots.
I have not heard many great things about the taurus compact semis,so to be sure before spending your hard earned cash,put it through its paces.