Best spkrs under $700 for a Rotel RA-1070 integrat

I just purchased a Rotel RA-1070 integrated (100 watts x 2 into 4 ohm) for a great price. Now I'm looking to pair a set of speakers for them. I had originally intended on purchasing a pair of Ascend Acoustic CBM-170's, but now I feel as if my amp is way too strong for a simple bookshelf speaker. I've never specifically heard the 1070, but I have heard the 1062, and it was described to me as a bright amp.

Should I consider any of the following speakers in either bookshelf or floorstanding models? I've auditioned B&W's, Paradigms, and I'm also still considering the Ascend's. Any help would be much appreciated. I'm also open to used speakers, but my speaker budget is $700 max, preferrably less.