Totally newbie comments here....but I just demo'd the 6010 at my local HT store and all I can say is WOW! I've made my choice and it will be the 6010.
This thing is bright as hell (I almost thought I was looking at a 100 inch plasma screen on the wall!...seriously even my wife was amazed) and killer 3D!, also super bright and no ghosting that I could see on any Captain America scenes. Even with the bright ambient lighting of the store it rocked - approx 14x16 room with a double glass door on the side near the screen. I was quite excited about the performance with ambient lighting because my room not a dedicated theater, more of an entertainment room, and my wife likes to have the fireplace going sometimes during a movie, so this performance means a lot to me.
I had demo'd the RS45 and HW30 at other stores, albeit not at the same time, but to these virgin eyes the 6010 really set itself apart, and made an huge first impression. So critical analysis aside, I really liked what I saw....yea the fan is somewhat noticeable in normal mode, and only on quiet dialog scenes (still, what was Epson thinking!!!!), however 98% of my viewing will be in 2d and the delta in Eco mode is worth the silent fan (absolutely dead silent in eco mode) and when I do watch a 3D flick I can deal with it (actually my wife didn't hear a thing till I told the sales guy to turn down the volume all the way and switch between modes).
I don't know much about interpolation or response times but I looked at scenes that were power packed action and I saw no jitter or motion blur. Colors and contrast were excellent, not over saturated and bright levels were not clipped. Skin tones looked natural and soft, yet sharp and detailed. I am a pro photographer so one thing I can report with authority is brightness levels and color balance - I could not see a need to have this projector calibrated but I guess that will mean more once I get in installed at my home.
I wanted to see a real dark produced flick such a Potter or Underworld movie but we were short on time...there were some dark scenes on CA that I was quite impressed with and, of all the things I was most concerned with after reading the comparisons here, I could not see any issues at dark levels. Transitions from bright to dark areas were very good IMO. I saw no pixelization.
Anyway as I said I am not a videophile, however I am very sure this will be an excellent first project for my needs and room size. I will report first light but first I need to get the drywall finished and flooring down!
Thx all for the posts and analysis - first rate!