I have the original 11880. Bought it in 2008 and it was a great printer for the first 4 years (paid for itself many times over). Then the missing nozzles, constant cleanings started and now its retired! In 2008 the 11880 was selling for around $7200 with 110ml starter carts. The new one is $12,000. Too bad the new 20000 has the Take-up reel as an option.
I bought a Canon ipf8300 in 2011 and have not had a single problem other than replacing two print heads (expected). If I have to go back to the 60 in. class printer, it will be a Canon.
It will be interesting to see what the price of this settles down to, once the 'early adopters' have done with paying list price. They had $1000 and $2000 rebates on the 11880 many times over the past years, and it was possible to buy it for around $5000 at some points. Expect this to be $7-8000 after a year. Canon will fight too, for their 60" model market share, so expect some price competition in this area. Good for the consumer. Ink is of course the rub here - when you compare prices, note that Epson, as usual, supplies its egregious 'Starter Carts' with a $12,000 printer(!) whereas Canon gives you a real set of carts, albeit the smaller ones. That's a couple of thousand dollars difference right there, as you'll have to buy a set of Epson carts right away, and be ~$2000 deeper in.
For those on a budget, the 11880 is a bargain. As many say here , it's a workhorse, very reliable, unlike the x900 range, and the ink carts can be found very cheaply on eBay, sold on by private sellers, in the $100-$200 range for 700ml. Expect more carts to appears there, as users switch to the new model. Makes a lot of difference, if you are on a budget.
I have no bias, and own both Canon and Epson LF printers, but will be looking to upgrade my 11880, to the new Epson or a Canon, when decent rebate offers begin.