Panel Speakers

 DAEX58FP Flat Pack 58mm Exciter 25W 8 Ohm

Since my hearing is pretty shot and I havent listened to a pair of good speakers in a while I am finding it hard to judge how good these are. I am not a bass freak so I dont mind speakers being light on the "doof doof". These do seem to be very high end though bright verging on tinny. I would like to get a set of conventional speakers to compare them with. The choice however, inline with the availability of very high power >100 Watts D Class Amplifiers , look to be very inefficient. 

I need to track down a high efficiency old school 8 - 10 inch medium quality driver.