ColinthePilot, since you have a CCW gun and seem happy with it, and this would be a range gun, then it sounds like you don't need a compact frame at all.
CDNN has NEW Ruger P95DC w/2 mags for $249 and the two-tone KP95DC for $289 and a lot of other NEW choices under $400 -- FNP (reg or compact), S&W Sigma, SW99, Steyr M-A1
If you can do without the rail, since S&W has discontinued the older metal-frame autos, CDNN has NEW S&W 6906 and 5906 stainless 9mm (12- and 15-shot) and S&W 410 blued 40 S&W (11-shot) for $399.
Used there are tons of options under $400 (and some under $300) including Beretta 92 and 96, Glock 22 and 23, Sig P6, and all kinds of S&W metal-frame 9mm and 40 S&W.
As a matter of fact, the trade-in stainless 5906 9mm for $319, or 4006 40S&W for $329, both with protected adjustable sights, would both be great options, and I am sorely tempted to get one myself.