My recollection is that the 44 is a Sparkman & Stephens design and the 441 is a Ron Holland design. Both will be extremely well-built and relatively fast blue water cruisers. Between the two, I would lean toward the 44, because I think there is much more of a resale market for the S&S Swans, which have a very devoted following. Holland did not design for Nautor for very long before Swan went to Frers so Holland does not have the following (with Swans) that S&S developed. Just my two cents. (In the interest of full disclosure, I have an S&S designed Swan.)
Here is a good web-site, although very biased in favor of S&S.
S&S Swan Association