Just a quick addendum on the absurd notion of letting the more limited selections of speakers dictate the type of system you choose: I would no more let the fact that there are only a few types of performance tires available for my large dual-sport motorcycle deter me from my strong preference for that particular bike, as I would let limited speaker selection determine what type of audio system I choose. The fact is the tires made for my bike work extraordinarily well since they are designed specifically for it and the applications it is used for, as many of the speakers (and there are many) designed for low-powered amplification do work superbly well in that application since they are often designed specifically with that in mind. Now if you happen to be in the crowd that insists that they have speakers that resemble public trash receptacles available among their selection, or those that look like toy soldiers beating drums, or need to know that you can make your own personal contribution to raping the rain forests of some specific exotic veneer so your friends can look on and nod in knowing admiration, well then I guess you don't need to go there, and I'd suggest vacationing and Fernando's Hideaway. But if you don't necessarily need your listening room to look like a state park picnic ground, or March of the Wooden Soldiers, or complement the burl wood on your Lamborghinis dashboard, then do remain open to the world of various forms of low-powered amplification.
Marco