I have the Saunders Universal 11x14. After some initial tweaking (it apparently was not properly aligned as it came from the factory) it is a joy to use and I recommend it highly. You may have to spend some time with a screwdriver and a measure to get is square but it's worth it.
One caution. Four-blade easels don't fit properly under some smaller enlargers. I could not utilize mine properly with my previous enlargers. There needs to be enough space between the column and the center of the enlarging lens so you can place the center of the easel directly under the lens. Even with my current enlarger, there's not much "wiggle room" for cropping and being able to print in the center of an 11x14 sheet of paper.