I have the 226 and 229 in 357 SIG, and both are excellent guns for this cartridge. I shot my 229 for the 1st time in a few months the other night, and had forgotten just how manageable the gun was. It's much more pleasureable for me to shoot than, say, my Glock 32. With the 226, you'll find it just as accurate and a little softer recoiling. Trigger pull feels exactly the same to my hand. Honestly, with the excllent ergonomics of SIG pistols, either the 226 or 229 is easily controlled. I've looked at the 239's seriously, but they are just way too small for my hand - can't even get my pinky on but abt 1/2 way if I really squeeze my fingers together.
Also, tho full size, the 226 is not that difficult to conceal if you ever DID want to carry it. Including the beavertail on my Kimber Pro, the 226 is only abt 1/2 inch longer, and it has the thin profile of the 220. I had a SigPro in .40 that was a really accurate gun, but neither of the interchangeable grips really fit me very well, so I traded it for the Glock 32.