the px4 sd is a really nice gun, comes with 3 back straps which is really cool, fits anyones hand really nice! 3 mags, full cleaning kit, and 3 mag releases. i just bought one myself and am going to break it in this weekend. the double action trigger is super smooth alot better than alot of the similar pistols in its class. ie polymer grip.
i owend a glock 40 a few 1911's and some rugers but there is something special about this gun its just badas$, the hard case with two levels is really nice as well.
my 2 cents, i might try and do a range report if i feel up to it.