This is about 18 months old and too silly for comment. Let's use this forum for productive discussion please.
To be honest, I'm starting to think that you are here to just pump up Epson. Don't get me wrong, they make gorgeous prints, but even in the other thread, it got me thinking that its quite odd to say that the switching blacks isn't an issue, when clearly, this hasn't been a problem with Canon for a very long time. I don't know your history or what printers you use or if you have ever had any problems with them. I've owned an Epson 4000 and a 4800, and they were both horrible in the clogging department (granted, I didn't use them all that much). But whenever I did a clean cycle, it actually often made problems worse than better.
Ever since I've had a Canon 6100 and now a 6400, my life is like night and day. Clogging is simply not a problem, and if ever after a year or two it is, I can replace the heads myself. Never mind also the fact that I can print on any media without every worried about switching inks. I understand that Canon has no good option in the 17 inch range, so the P800 sounds fantastic, but when it comes to big printers, I cannot understand why anyone is sticking with the clogging Epsons. The way you always defend them surprises me, but this is fine, its just an opinion. But to call the video silly and disregard it makes me not respect your opinion. This is a real user who was frustrated to no end and wasted money and got nowhere. Do you really think a person would do this to their printer unless they were pissed off to no end? I know the video is old, but your reply just makes it seems like you're a rep for Epson. Even if 90% of the Epsons work flawlessly, and I doubt its this high, for the users that have problems, its a living hell, and I know because I've lived it. I would venture to guess that if you compare user satisfaction of the 24 and 44 inch models between Epson and Canon, you will absolutely have a huge difference (I base this on all the posts and videos I've watched).
So I think its important to not sweep these issues under the rug. Lets hope the new P800 ends up being as great of a machine as the 3800/3880 ended up being, but when it come to the big printers, Epson is sorely lagging Canon in many ways and the video isn't just silly, its representative of the torture that a person goes through who relies on their printer to make a living and the pain they go through when it isn't working as it should.