Both are very nice looking tartans and both cary a personal family significance. But beyond that, I'd like to suggest that the A.Gunn is probably prefereable for a couple of reasons. First, I think the colors of the A.Gunn will offer more opportunity to match up with different clothing options. (Blue is not as easy to match up with some shades of green and brown.) Also, from a purely esthetic standpoint, I think the A.Gunn suits your complexion a bit better that the Jones. I believe youll find the Gunn more versatile for the all around style you present. There's my tuppence worth.

Cheers.