Here's my take on this issue. I was recently (last couple of weeks) looking at both these pistols Let me qualify my opinion a little---I have owned glocks, sigmas, xd's, m&p's and shields. I have and always will carry an Airweight 642 in my right hand pocket. I was going to buy one or the other of the two pistols. Either a Sr9E or a SD9VE, I chose finally, the SD9VE. Main reasons----Trigger on the SD9 is exactly like my 642---Finish on the SD appears to be more durable--- No safety on the SD to forget to reapply,---No magazine disconnect on the SD,---Two magazines come with the SD.I really like the SR9E but the trigger on the one I played with was just too scary light, and I carry inside the waistband. These were the reasons I chose the SD9VE---I would still would like to get a SR9E for range use, it is a fine gun.However there is nothing wrong with the SD9VE--I shot a 5 round one and one half inch group with the first five rounds at 7 yards. It is just like carrying a 17 round revolver in your waistband.
And let me add that there is absolutely no comparison of the trigger to the old SIGMA. The SD trigger is more M&P like. I love it.