The Nassau branch of 3 Brothers is by far the better of the two.
I tried the Farmingdale branch first and found the pizza dissappointing. The whole wheat crust was soggy, and the green veggies over cooked. I almost didn't return.
At the Nassau branch a friend and I split a combo Bianca and Margheritta pie and asked for the whole wheat crust pie to be well done and crisp. It was absolutely delicious. the Margheritta was redolent of garlic, with delicous tomato sauce and generous Daiya cheese. The Bianca with its cashew ricotta was a revelation. And the decor was much nicer than Farmingdale too. I plan to go back often and can't wait to come in for the weekend brunch.Pros: Big, varied menu selection, Not just pizza
Cons: Expect to wait a bit for your food., Not cheap...but worth it.