In the Gen 4 camp
I love my G27 Gen 4 and am currently searching for a 26 for MRS. Vermonter. LGS had me run over for a 26 only to find out that it was a Gen 3. She specifically likes the grip on the Gen 4 as supposed to the 3 so its easy for us. Now to find one.
As for the mag release on the Gen 4 Never an issue here.