I personally like the SIG-Sauer P239s, and the Kahr 9mms. Their P9s are very light in weight (being mostly polymer construction instead of steel) but they seem to have some slide lock problems. I'm not sure whether Kahr has corrected this, perhaps they have. I especially like the K9s and perhaps most of all the little MK9. Hope to get out and try these at an indoor range sometime soon.
But they're all too darn expensive for me right now.