Both are good. I would not walk away from a -5 version if you find one that appeals to you at a reasonable price. Generally, I think the 19-5s I have seen were not finished quite as nicely as the -4s, but beauty (and price) are in the eye of the beholder.Do not get to overly wrought about the P&R thing. Judge the gun, if you are buying a “shooter,” for what you see - and the asking price.
A WTB ad here is probably a good idea. And GI. I rarely look at GB anymore. I’d start here. JMHO.
Thanks everyone for the tips and the help! What is GI?