I had a chance to use most of my gear on PannStarr, and most impressive of all were my 25x100mm binoculars.
Overall, PannStarr looked best when it had that wide 2.5 deg's field of view and all the light gathering both eyes of the big binos gave me.
It was also very easy to pan around for the comet and find it with my big binoculars on an alt-az tripod. It was definitely not an easy target by any stretch of the imagination and most (all) of my so called astronomy friends would not have seen it if i wasn't there to spot it first for them.
Runner up for the next best views I got were with my 6" F/5 Celestron Omni 150R with my binoviewer and 24 Pans, with straight through viewing. This was 31x at 2.2 degs field of view.
Next was my 180mm F/6 APm again with the binoviewer and 24 Pans at about 1.5 deg field of view at 45x.
Everything else I used, a C8, C11, T0A-130, TSA-102 were just not as impressive as the above top 3 I listed.
I think partly because there just wasn't that much time to observe it every available night, and by the time the comet was spotted, it was just to low and in the muck sometimes, to really take advantage of larger aperture and higher powers. At least that was the case in my area. I never had more than 45 minutes on any given night to enjoy it.
What was your best views by, using what eyepieces and what magnification and field of view, that seemed to work best with you?
this was my top choice!