Epson R2880 Ink Lights all on, Love/Hate, and a bit of whining...

OK, here's when I start to become a bother, so I'll apologize in advance...

I just looked at three Epson printers:

R3880 - 3.5 picoliter drop size, using positive pressure and an "ink repellent" coating on the head that's supposed to reduce/minimize clogging.  Maximum resolution is 2880x1440

R2880 - 3 picoliter drop size, using vacuum (as I understand it), and a maximum resolution of 5760x1440

R3000 - 2 picoliter drop size, using vacuum, and a maximum resolution of 5760x1440.

If the tendency to clog is related to the size of the hole in the head, isn't the 3000 going to be the queen of clogging?  Or did Epson do something to reduce the clogging?

And, is there any rational way a normal person can SEE the difference in resolution between 2880 and 5760?

I read in some discussion that the positive pressure feed on the "Pro" printers ALSO significantly reduces clogging and ink waste over the vacuum systems on the "consumer" units.  True/false?

I like that the 3000 is only $600 right now, versus the $890 for the 3880, but I'm a LOT less concerned about $300 for the printer than I am about NEVER GOING THROUGH THE DAY-LONG OR 2-DAY PROCESS OF GETTING THE 2880 UNCLOGGED AND PRINTING AGAIN...

I don't do a lot of really large printing - most of my prints are 11x14.  BUT, with the larger carriage, presuming I can feed it actual canvas, I COULD print my own canvas prints, stretch them myself and save considerably over the cost of having them printed.

SO, what else do I need to consider?  How many people are using R3000 printers?  What kind of problems are they seeing?