If you like the feel of the 75b and want a 45, I suggest the Tanfoglio Witness, it's much closer to the dimensions of the 75. The magazine is actually the same between the 97b and the Witness, but the grip is much smaller on the Witness because the 97b runs the hammer spring down the back strap just like the 75b, the Witness on the other hand uses a transversely mounted spring to keep the grip closer to the 75b. The slide also has a similar profile to the 75b, whereas the 97b slide is taller like a 1911.
I have owned both and shot them side by side; Witness hands down! Plus for the price of a 97b, you can get an upgraded model like the Match.