I do not know the NHT's but do have the Epos M12's hooked up to a Creek 5350SE and I am very happy with how it sounds. The Creek is somewhat laid back while the Epos are more forward, making a great partnership. I would completely disagree about them not being dynamic. Hey, their british, the home of PRAT. They can rock!!
The Epos have an excellent midrange and top end, and for a monitor have great bass. They are rated down to 60Hz but I think they go down further than that.
They are a revealing speaker (bad recordings will sound bad, etc.) and from what I have read can be fussy with what you partner them with.
All in all, an excellent speaker. Real veneer too!
I have been kicking around the idea of going with a tube integrated or a hybrid and have been considering the Unico. One issue that I have been mulling over is using a tube amp or hybrid with a ported speaker, which the Epos are. I posted recently under "Speakers" a topic called "Ported speakers and..." and got some good feedback. Take a look. Anyway, I am not sure a ported speaker and a tube/hybrid amp will give you tight bass or not. Maybe others can chime in on this.
Hope this helps,