I still regret selling my Sig 239 9mm. I had that matched with a Kramer MSP in horsehide, and it was uncommonly good. I got talked into selling it to get into a 1911, and I regretted every minute.
The .45 is now gone, too. I couldn't find a 239 at the time, so I got a Kahr CW45. The jury's still out, but it might give the Sig a run for it's money.