One of the best shooting 9 mm's I've plinked with is a Sig P6. I do also love my 226. That 210 suggestion would be great, but I haven't found one in the 500.00 range yet.
I have no experience with a 1911 in 9, but I would IMAGINE one would be a pretty smooth plinker.
Love my 9E which is just an SR9 w/o all the safety stuff on it. I must also note my Sig P229 is a nice one as well.I like my SR9. It's a good shooter.
About 20 years ago I bought a LNIB full-sized EAA Witness with the so-called "Wonderfinish" at Bradi's. At the time genuine CZ 75's were virtual Unobtanium and I had been intrigued with the platform from reading the late Col. Cooper's opinions on the design. IIRC, the price with two full-cap mags was $225.00. FWIW, these all steel pistols are now generally referred to as "small frame" models.
Over the ensuing years I've run a bunch (circa 8.5 - 9 K rds.) of assorted 9x19 ammo through it running the gamut from domestic and foreign generic FMJ's in both 115 and 124 gr flavors, Premium JHPs from 115 to 147 gr. plus a lot of cast bullet handloads and 'warm' NATO surplus ball. It fit my hands exceedingly well, has always worked flawlessly, hits right where I point. Besides routine cleaning and lubing, it has never required more in the way of maintenance than a routine spring replacement at roughly 5 K rds. Nothing has broken nor worn out and that "Wonderfinish" shows only minor 'polishing' wear on the contact surfaces of the slide and frame rails.
These can still be found for well under your $500 price on the used market, and I'd highly recommend giving them a really close look should you run across one. I've spend quite a bit more and gotten quite a bit less in terms of value received in my time. I truly consider it to have been perhaps the very best "bargain-priced" handgun I've ever bought.