I have the basic 229 (no rail-no DAK) and it's a great weapon. Weather or not you want one like that or one of the other models is a personal preference thing. Any way you go you will have a great weapon. I don't have a use for rails on my pistols being I don't ever want to put anything on them. But I wont be using your weapon so you will have to look at the pros and cons of each as well as what you intend do do with it. Todd has the SAS Gen II. Those look to be really nice. I've shot one but not enough to give a real educated opinion. about it. It was a sweet shooter..I can say that.
There's a bunch of people here suffering happily from the "Signess". I'm sure you will get some pretty in depth reasons to go with any of them. As for me the basic model is plenty good enough. It will shoot better than I can shoot it. So when mine misses it's me not the weapon.