SMGb's vs MG1.6

I have moved my pair of SMGB's to my new listening room (18 x 12ft with cathedral ceiling)and often drive my Bryston 4B St amp into clipping. I am considering a pair of 1.6's - are these a better bet?
The 1.6's are incredibly better. But they will require more clean power than the SMG's.
Absolutely. The SMG is a good speaker. The 1.6 is a great speaker.