I have to say that I tend to prefer stouts/porters myself, and have tasted my fair share of both. Be that as its may, the following is simply my opinion….
I really think Anchor Porter is one of the better, and Sierra Nevada is decent. I'd agree the Great Lakes Edmund Fitzgerald Porter is up there as well, though you will not find it in Texas unless you get it shipped somehow. I've got one in the fridge right now thanks to a buddy that picked a few brews up for me in MN on his way back. Go find yourself a Black Butte Porter from Deschutes Brewery (OR), as it is also one of my favorites. Samuel Smith's Taddy Porter and Fuller's London Porter are must tries..after all…Porters originated in England. Odell's Cutthroat Porter is very good as well.
I've never been a huge fan of Real Ale's coffee porter, but many like it. Kona's (HI) Pipeline Porter is so/so as well. I'd try Rogue's (OR) Moca Porter before those. It's pretty solid. When I was in TN I was able to try Highland Brewing's (from NC) Oatmeal Porter and Duck-Rabbit's (NC) Porter. I absolutely loved Highland's beer, but again it's one we can't get here easily.
If you care to try unique tasting Porters try Breckenridge Brewery's Vanilla Porter (CO)or Stone's (CA) Smoked Porter. The Breck is a pretty decent beer, but I can't drink too much of it. The Stone, in all honesty, is so smoked you'd think you were chewing on a burnt log. It's pretty good though. The Alaskan Brewery's Smoked Porter is a little more balanced. 512 (Austin) Pecan Porter is ok.
I've had countless other porters, but many are from small breweries at beer events out of state. It sadly wouldn't do you any good because we can't get them here.
Try this on for size:
http://beeradvocate.com/beer/style/159On my "to-do" list are Yuengling Porter, Harpoon Leviathan Baltic Porter, whatever else I can find.
Wow, I went on a lot longer that I thought I would...so synopsis….
Porters you should try that are available to you (Houston):
Deschutes Black Butte Porter
Samuel Smith's Taddy Porter
Fuller's London Porter
Rogue's (OR) Moca Porter
Breckenridge Brewery's Vanilla Porter
Stone's (CA) Smoked Porter
[This message has been edited by p-wonk01 (edited 1/21/2011 11:08a).]