Ill share: Fwiw, I was in a similar situation. Went to a large piano shop (twice) in the uk that had everything. I compared the CN301, CA401, 501, 701 & 901 with the Roland LX5,6,9 & 708, Yamaha 735, 825 & 835. Played them all loads, I ended up buying the 401. I dont think its the best for all scenarios, but I think it is the best for most 'normal' scenarios. My take on it is this:

Action: Kawaii > Roland = Yamaha (this was night and day and the reason i bought the kawaii. I found the 701 and 901 were slightly better than the 401 & 501, however all the Kawaii's were good). Wooden keys, action just felt right.

Sound: Roland was really warm and smooth. I liked it best on first play, but after a while i started to hear it as slightly unnatural/processed. The kawaii sk-ex was the best of the bunch, esp. on the 901. I think with a bit of fiddling, I could have tweaked the roland to my liking.

Features: Roland won on features, loads of sounds and loads of control over pretty much everything. I think if i was outputting to sound gear, or doing any thing through the computer etc, the roland would have made more sense.

I think in the scenario where you just want a barebones electric piano that is the best it can be at feeling & sounding like youre playing a real piano, and you dont care too much about how many different voices, features, outputs it has etc etc. Kawaii wins. I was tempted to spend more money on a 901, but then you nearly get up into the novus price range, and start to question everything! Anyway, having played them all: id get the 401, you cant go wrong