The P229 is one of the finest handguns on the market today. It ranks with Glock, HK, ect. It is a double/single action design with frame mounted decocker. They come with excellent triggers that only get better with age and use. It also has the advantage of having barrels available for it in 9mm, .357, and .40 S&W although a P228 would be lighter if 9mm is your final choice.
While on that subject some folks find a fully loaded P229 a little heavy and thick for day to day carry. On the other hand until you shoot one you don't know what real comfort in shooting .40 S&W is. The P229 has the distinction of being one of the first handguns that designed for .40 S&W and is not a previous 9mm model with a .40 barrel stuck on it.
The only real downside to the P229 is that the majority of them came out with a stainless slide finished with a black nitride coating. This coating is not very durable and will wear on the high spots or contact areas fairly fast. With the slide being stainless this is not a real corrosion problem but many see it as a cosmetic issue.
I have a P229 police trade in that I purchased for $285.00 and tax. It has a little less than 50% of the "black" left on the slide. The frame has a few small nicks here and there but nothing major. I personally see this finish wear as attractive. The weapon has that "been there" look that only comes from being carried and fired over a long period of time. I have no plans to refinish it but my options would be to have the side bead blasted for a satin stainless look ($35.00), send it off to one of the refinishers like Robar, W.W. Birdsong, Arizona Response, ect. or paint it myself with some of the excellent finishes available from the Brownells catalog.
However, I have a medium size handgun that shoots like a mini rifle, holds 12 + 1 of .40 S&W, is absolutely reliable and cost me
less than $500.00 with after market grips and holster. I am not worried about a little wear. Like a good 4WD truck or jeep, a daily carry gun really becomes comfortable when you get to the point were it has those first few nicks or a little wear. The bottom line is the entire SIG line exudes quality. Very similar to owning a fine European automobile like a BMW. But don't take my my word go rent one and try for yourself.