Even though I AM sailboatdata.com, and here is the page, SIGMA 41 sailboat specifications and details on sailboatdata.com
and I don't normally express an opinion about one particular boat over another,
I personally chartered a SIMA 41 more than 20 years ago for more than a week. It was a US model with a masthead rig. This model was obviously competing with the Swans of the time, so it had teak decks, and a very 'woody' interior. On deck, winches of every size, were not lacking.
We sailed in a variety of conditions, including 2 days when it blew more than a solid 30 knts. It always performed well, was always in control, and at the time, it seemed very fast, especially to windward. The interior was comfortable, though maybe not of a style that was exactly to my liking.
I have no idea how they have held up over the years.