My buddy and I are looking to upgrade to a 20 gallon brew stand, and I'm looking for recommendations between buying a full setup, which brand, or making one ourselves.
I've been doing a lot of research for my own purposes.
Brutus 10 is the gold standard of making your own. http://homebrewacademy.com/brutus-10-build
Or, if you don't want to weld, which is the one I'm probably going to do. http://www.aleiens.com/profiles/blogs/wallace-the-weldless-brew
I can recommend the 13 gallon Braumeister50 (50 litres).
Combined with it I also use a 15 gallon (70 litre) saucepan (on a gas ring) that I mashout into for the boil/chill cycle which allows me to reload the BM50 for another mash giving me 26 gallons of liquid paradise in a nine-hour brewday.
I have yet to have a problem with it after some 30 or so brews.
I have a More Beer Tippy system that I love. Easy to clean, brews with consistency once you figure out how to use it well and has automation for heating elements and thermostats that makes brewing fun. I recommend it.
i pieced my home 20 gallon system together i used angle iron from home depot and used high temp paint on it. march pumps and rims system that i built from scratch. its much more fulfilling to do it your self.