I don't know if I qualify as a die hard SIG fan, but I have a 226, and I've shot a friend's 229.
The 226 is a large hand gun. The 229 is a little more portable. I shoot better with the 226. Probably because the sight radius is longer.
If I was going to carry one of them (and I wouldn't because IMO they are both to big for me to carry) it would be the 229. If I was going to target shoot or keep it next to my bed, I'd use the 226.
They are both fine weapons albeit kind of expensive.