When evaluating a speaker, what is most important to you and why (examples: high-end response, mid-range clarity, bass performance, size, linearity, etc.).
I stick with bookshelf speakers since I'm a frequent-moving apartment dweller (smaller, easier to move), so I look for the best overall sound I can get, from top to bottom, which I guess could be classified as frequency response. I look for the fullest sound I can get. Some bookshelfs can pull it off well, some can't. Also, midrange clarity is pretty important. I often take in self-made demo discs that include tracks of singers whose voices I know pretty well and I'll a/b to hear differences bt. speakers. Size, obviously, is important to me...probably not so much to the folks who have space for floorstanders.
I must confess that looks/fit and finish is big with me too. I see some speakers and I think that, had more attention been paid to fit and finish, they'd be the speaker for me. I know it's superficial. But hey, to each his own.