Plays (preferrably contemporary) that are strong in dialogue, wisdom and philosophy (but most importantly dialogue!!!)

I'm trying to learn to write dialogue.ive read my fair share of the classics. But the density of dialogue isn't doing it for me. I'd like to read plays. Particularly those held in high regard, albeit more contemporary. I don't know where to start.

I've read Shakespeare, but I'm looking for dialogue that is more modern, but still strong. The best of the best.

Suggestions?