Someone mentioned CDI Sales (Cole's Distributing) in an above post, I believe in reference to a Hi Power.
They also list CZ 75's (both B and pre B) among their options.
Of all the pistols I own in 9mm, my CZ 75 pre B is my favorite; I like it so much (and so does my son), that I bought another as his 21st birthday gift and first/only pistol.
My other 9mms (all fit within your price range, as I got them at or south of $300):
Beretta 92SF
S&W 39-2
S&W 915
Star 30MI
Star B Super
FEG Hi Power clone
Zastava CZ99
Norinco T-54 with 9mm barrel
These are all great pistols, although on the heavy side for some.
You mention sights; my experience here: my CZs have thin blade front sights, a little tough to pick up at first, but allow for very precise shooting. The Beretta and the S&W 915 have (faint) Tijicon sights, and the CZ99 has a (dead) variation on that; the big 3 dot design is easy to see.
The Star 30MI has a unique red/white pattern that also is easy to see.
As you can tell, I like my guns to be metal, steel if possible. Not unbearably heavy, despite the modern complaints, and I find they give a better feel and followup.