No, I'm not brand loyal when it comes to rods. I've found that I have preferences. Though I haven't cast any newish models, I've never met a Loomis that I didn't like. And though I haven't cast any newish models, I never met an Orvis rod that I did like.
That said, if I picked up a new model of an Orvis rod, and cast it, and liked it, I wouldn't hesitate to buy. I have no problem with the company itself, and I WANT to like the rods. And in fact, I have 2 Battenkill (bar stock) reels and both have been flawless, and I've had a few pairs of Orvis waders that I liked, and I have some Orvis clothing as well. I like the company.
This all might have some relevance based on taper philosophy, or it might just be coincidence. i.e. I've tried some models of all, but I haven't tried all models of any of them. Maybe it's luck on which exact models I've tried up. But:
Like:
Loomis, Sage, St. Croix, Winston, Cortland
Ok:
Redington, TFO, Hardy, White River
Dislike:
Orvis, Scott, Cabelas
But again, I have no emotional attachment to, or hatred of, any of the above, and honestly look forward to being proven wrong. Variety is the spice of life.