Harbeth P3ESR vs. Aerial 5B

I'm putting together a bedroom system with a wall-mounted flatscreen and three wall-mounted mini-monitors underneath it.

I like sealed speakers for this instead of bass-reflex to try and control standing waves.

I haven't heard either of these models but I do like the Proac sound, which sort of led me towards Harbeth. I'm also afraid that the P3's wont play loud enough which led me towards the Aerial's.

By the way, Proac will soon be releasing a new Tablette model (they will discontinue the current models and stay with the one new model)so that may be an option as well if it's sealed.

Thanks.