I actually listened to 3 songs the other day on the WF-35 and 34. I was very impressed with the clarity of the highs that the speakers produced, and considering the size of the room I listened in, the bass response was nothing to laugh at. I think they could benefit from having a dedicated sub, but certainly dont need one. As for the 34, I found the highs very disappointing. They were very muddled and unimpressive, no clarity at all.
They were connected to a Denon 3809 Ci which I understand is a pretty good reciever, so I think they were getting enough power, but your room sounds somewhat large, and if your intention with these speakers is to entertain a lot of guests and people talking, doors open to a patio/deck and things like that, the sound from these may not be able to compete with everything else, but this is true of a lot of speakers.
I think for movies and music though, you can really enjoy these speakers. I hope you get a chance to listen to them before you buy them.