Win,
I posted a few weeks ago under S&W40VE (10/26/04) and gave my 2 cents about this pistol.
For what it's worth, since that time I've fired another 1000 rds + through my SW40V which is one of the mid-range of the earlier manufacture runs.
I can honestly say that it eats everything I put through it and only tends to pop a casing off the top of my head about once every two mags or so now.
After polishing the feed ramp and chamber mouth about a month ago, I've had zero feeding problems and am very pleased with it for both shootability and accuracy.
I have to admit that the original 10 rd mags it came with seemed to have a problem feeding the last round sometimes, but the newly available LEO hi-caps are great.
I have a soft spot for my 1911's, but except for the reduced caliber of the Smith, I don't have any adverse feelings about switching to the .40 for carry purposes. The double capacity along with weight and size reduction suit me fine.
There are some who look down on the Sigma's as a cheaper version of the Glock (true in most respects) but for the money you'll pay, I haven't seen a better pistol for my uses.
You might try to find a shop that will let you try it out to see how you like it. Some of them around here for instance, have their own ranges on premesis, and it works-out well for everyone that way.
Good luck in your choice.
HP