The PT145 Pro is definitely a more concealable gun than the Glock, though they're roughly the same size. The Taurus is thinner, and for me, fits my hand much better. The Taurus will be hit or miss, based on everything I've read (and my own experience [I own a 3rd Gen PT 145 Pro SS]), while the Glock will provide "boring reliability." You've really got to shoot them both.
If this isn't for concealed carry, I wouldn't buy either. I'd go for a larger gun. These short-barreled .45's are just not as fun to shoot for any length of time, IMHO. They are great for concealment, but they will be rather punishing if they're only meant for range/HD duty. Also check out the Springfield XD series, as they have the other strong entry into this market at a reasonable (sometimes less than Glock) price. Their ergonomics, for me, are better than Glock.