i would look into a pistol that was FIRST designed from get go as a .40s&w and then possibly made for other calibers.there are several but not many.
secondly,i would consider the beretta px-4.personally,i'm not neccessarily a fan of the px-4 or the .40s&w for that matter.so why would i have you take a look at it,well,two reasons.
firstly,the rotating barrel lock up system is basically the strongest lock up of any "normal" pistol out there that i've seen compared to the other normal systems used on others...that may be something to consider.
secondly,it's also one of the softest shooting .40s&w out there especially considering it's polymer.i believe this also has to do with it's lock up.it's not too much different in 9mm compared to other 9mms but in .40s&w it does seem to suck up more then normal recoil.
the system is a bit bulky and i believe it may explain why beretta went to a different system for the sub compact but for a full size and especially in .40s&w,it is something to consider.
by the way,if i wanted a beretta 92 in .40s&w(96),i would look into the 90-two.it was designed around the 40 first.