Everything besides Ridgid is swine vomit...
I wouldn't go that far, but I will agree that everything CHEAPER than Ridgid is swine vomit, so you're not doing yourself any favors looking to cheap out on a wrench, and you certainly can't go wrong with a Ridgid.
That being said, while I own a number of Ridgid pipe wrenches (all iron), and just this week I brought my 36" one to store at work (because I've never used it), ever since I've accumulated Snap On PWZ0 through 4 I haven't touched a Ridgid wrench other than to move it around, and the only reason I haven't sold the 36" yet is because of my fear that I MIGHT want to use it one day. But I also know it's really something I'd only use to disassemble something that's never going back together.
For the record, I've watched 36" Ridgid wrenches come and go on CL for $50-80 for years, and almost jumped on one at $30. When I saw one going for $20, I simply couldn't pass it up. Still never used it, though there were some days I was pogo-ing on my 24's that it would have been great had I had it then.
If you really want to enjoy using a pipe wrench, take a look at this antique 36" Schick:
These have aluminum hooks, so you MUST NOT use a Schick with a cheater, but the 36" also weighs about the same as a 24" aluminum Ridgid.
In today's market, Rothenberger is a direct equal to Ridgid. And you've got Snap On, which is rebranding Bahco I believe, and there's Knipex with a good product. I myself am partial to my Ampco wrenches, which you can find from time to time on eBay for reasonable prices. I've gotten them in bronze and aluminum handle versions from 18-24".