My experience with port and sherry is extremely ltd - never much cared for sweet wines until recently.

I liked this sherry so much that I bought a couple bottles (scroll down to tasting notes):

http://www.vino.com/wines/winery.asp?CID=12&WID=5413

their port is supposed to be their award winning specialty (but I didn't buy any).

I will very, very, very heartily recommend their 2002 sangiovese, however. One of my favorite wines in the area. Very versatile, woody, almost austere, dry, clean, tart fruit. Big award winner, but my uncle and sister-in-law both prefer other sangiovese. It's all subjective, I reckon.