Just out of curiosity, I tabulated the average score I gave the plays presented by each theater company during the past season. I was surprised how narrow the range was (only a difference of one star out of a possible five). On my rating scale, 2 is fair and 3 is good. Before you use this as a guide to choose which company deserves your subscription, be forewarned that each season is different. The company that had a series of hits this year could have a string of duds next year and vice versa.
Theater Company Average Rating
Playwrights Horizons 2.2
Second Stage 2.75
I do suggest that for companies that offer memberships as well as subscriptions, try the membership. Then you can pick and choose only those shows you want to see.