I am also researching .45 ACP.
I am left handed and have definite need for some lefty controls.
I am researching the FNH FNX .45 and the Bersa Thunder 45 UC Pro. I have the FNH .40 and the Bersa 9mm and they are very enjoyable to me so I started my search with their .45 brothers. Magazines for the Bersa are very hard to find in 9mm.