I've heard, and liked, the Rethm Bhaava. I heard it in a setup where it was not close to a wall, so placement might be an issue. I am not as concerned about power requirement--it is reasonably efficient and should work well in a small room even with as little power as you have available.
The various Klipsch speakers mentioned would also work well close to the back wall and with modest power on tap. I would personally go with a used pair of Audio Note AN-j or AN-K myself with your situation.

