I just had a review of the Smith & Wesson SD40 Home Defense Kit posted at Shooting Illustrated that may be worth checking out.
For whatever reason, the SD hasn’t achieved the notoriety of the M&P series nor the stigma of the Sigma (hey, that rhymed!), but that’s a shame. While I did have a minor issue with the gun (you’ll just have to click on over to see what that was), the gun shot as accurately as M&Ps I’ve used, and the fit and finish were first rate. If you can get your hands on one, you might just agree.