The P227 is like every Sig I've shot...very nice. It feels very similar to my P220, just a bit thicker in the grip, and I shot it just fine. We swapped back and forth shooting my P220 and his P227 and both agreed its pretty much a wash, it boils down to if you want a single stack or a double stack grip. They both fit the same holsters, they both have the short reset trigger, they both have the same factory sight set up (although mine no longer has the factory sights) and they both just feel good in your hand.
If I didn't already have a P220, I'd be on it like a fat kid on a cupcake. As it is, I think I'm sticking with my P220. I can't justify buying another handgun and spare magazines just for two more rounds of capacity.