The P228 is noticeably easier to carry than the P226. Save the latter for home defense (Sigarms, once again, has 20 rd. magazines). You might consider the P239. I carry one in 9mm quite often, as I do the P228.
The only problem with the P239/9mm is that the little woman will, without doubt, take a shine to it, so you might as well buy two of 'em.
