Efficient monitors to match Air Tight ATM-4 ?

I am looking for a pair or easy to drive monitors or small 2 way floor standers to mate with my Air Tight ATM-4 amp (about 24 watts per channel) - Rest of system is Ayre CX-7 CDP through a Placette passive and Pure Note Cerulean I/Cs.

I am currently using some Red Rose R3s speakers whihc work quite well but ideally I would like to find a speaker with minimal cross-over and in the region of a true 88-90 DB efficiency - I am considering the Devore Gibbon 8, the Ref 3A de Capo is but really welcome any other thoughts -

Thanks