Red Orchestra 2/Rising Storm - Thoughts?

[Sweet Sparkling Jarate]

I've been playing RO2 on and off as they went free on some occasions. I recently bought HOS/RS when it went on sale a few weeks ago. From my experience, its been the best FPS I've ever played. The mechanics and, in the case of RS, the niches of each team made the game so fun to play.

What are your thoughts on RO2?