Its amazing how many folks here come to this exact choice. Search the message base. They're both just awesome, you won't go wrong with either. I shot both, bought the HK. Strange thing: In the shop, the Sig felt much better in my hand, however the HK actually felt better to shoot for me, which was a surprise, since I had pretty much decided on the Sig before shooting them. I think its a combination of the wider grip distributing the recoil over more of my hand, and I think the recoil reduction system in the HK works very well. That, along with liking the control layout/versatility of the KH a bit more made the choice a little easier. The extra two rounds are nice as well. The fit & finish on the Sig are a little nicer, its pretty much a piece of jewelry in nickel. (Those Swiss, you know...), although I've heard there may be some finish durability issues with the dark finish versions. Supposedly HK customer service blows, but I've had an easy time with them on the phone with the various questions I've had (no problems with the gun whatsoever, its pretty much a brick s*%thouse...) The gun is more accurate than I am at this stage. The HK is a bigger gun, which you may or may not like. It looks more "menacing", to me, anyway, which I kinda like. Something you would definitely not want to be on the wrong end of. But I ramble...Nothing bad to say about either, just be shure to shoot 'em both before you buy & see what works better for your hand/eyes. Let us know what you decide & why.