WPMU DEV has been my go-to ever since I started on Wordpress. They leave no stone unturned in their quest to help. Case in point, I just got off a chat with Nahid, who spent the better part of two hours solving problems that no one else has been able to touch. A true rock star of support. But then, nearly everyone at WPMU DEV falls into that category. I wondered if the monthly subscription price was worth it, but halfway through my free trial I was already convinced to join. It is the best money I pave spent - like having my own WP department in my own home.