A good easel makes print production easier. A bad easel is a never ending source of frustration.
I have what I consider a fairly good easel. It's a Saunders 4 bladed Universal (14x17) and I got it from the retiring LF photographer that I got my D2 from. It was not expensive (maybe $30 US). It's not as nice as the knob adjustable models (this one uses sliders), but it is square and immensly better than the two bladed easels (including a brand new one) that I had been using.