For me, it is tough to pick one over the other. I have a Sig P239 and a HK P2000SK and I have no complaints with either.
I am slightly partial to the SIG, if only because they are 20 minutes down the road and I have taken a half dozen classes at SIGArms Academy.
That would do it! I really researched all available when I purchased my HK. I test fired them all for about a year. I went with the HK and have never looked back.