Welcome to the Forum!
I'm sure a moderator will jump on here and ask you to introduce yourself in the "introductions" section.
Are you in the US and a member of the LE community? If not, I'm not sure that you'll be able to obtain a G28. I don't believe the G28 to be available to the general public in the US.
That means you may be looking at the G29. Hard hitting round.
How are you planning on concealing? I'd also consider (which you may have already done) the G19, 23, 26, 27, and 30.
D