I have a Sig P229 in .357SIG caliber and love it.
They also make the 229 in .40. "thumbsup"
Mags use either round and to get the "other" barrel for the caliber you choose will cost you $170 or so.
P229 is also on my list. Price is a little higher than what I really want to spend but they are offering a $100 rebate for active military so its still a possibility. "thumbsup"