A large, hard-surfaced room means that the reverberant field will be stronger than is normally the case. This places higher priority on speakers that do a good job of generating a reverberant field that has a realistic spectral balance. In my opinion, both the Druids and the Gallos do a considerably better than average job in this respect. I don't know if you were aware of this, gsm18439 - but (imho) you're looking at two of the defiintely more intelligent choices for this application from among the hundreds out there.
Since I peddle one of these brands (though not outside my area), I'll refrain from the predictable. I will say that in my opinion given the room size and requirement to do justice to classical music you'd want the sub amp if you got the Gallos, or you'd want a subwoofer if you got the Druids.
Duke