Reviving this old thread. I'm finally starting my landscaping and I'm about 90% sure that I've decided to use porcelain tiles on my back patio. I've been over the pros and cons many times between porcelain/travertine/pavers/concrete and in the end, every time I see a home that uses the same porcelain tiles indoor and outdoor with a large panel slider, it really makes the house feel bigger and gives it a nice modern look.
Also went yesterday to look again at Baker Ranch Parkview Models, they all use porcelain tile on their patio's and the result is very nice. I'm going to ask my contractor to try and do 1/16" grout joint on the outdoor tiles to reduce grout cracking and visible stains.
Here are some pics from Parkview.