I spend half the year in the UK and half in France. I have a horrible Canon Pixma Pro-1 photo printer in the UK and a wonderful Epson Stylus Pro 3880 in France, so I do most of my colour printing in France. On the printer I had in France until last year, an HP B9180, I had endless trouble with heads blocking over the winter but at least the heads were user replaceable. However heads became unavailable for that printer and the paper feed was dying as well, so when Epson offered reconditioned ex-display 3880's in France last year for just €450, I went for one of them.
Knowing how expensive a visit from an Epson technician was to replace any blocked heads, I bought a set of the Piezography carts and a 700mm bottle of Piezoflush, last summer. It is quite a fiddly, lengthy and somewhat messy process setting the carts up for the first time, moving the chips over, filling and priming each cart. Also when installed, you have to do 6 deep cleans, 3 for each of photo black and matt black. I did wonder if I could have gotten away with three deep cleans, changing over black inks after two cleans then just doing a couple of black ink swaps but did not want to risk it.
Having now got back to France, with some trepidation I reinstalled the original Epson Carts and did three deep cleans. I was absolutely delighted that on the first nozzle check, I got a perfect result and the subsequent prints I would say were better than the ones I did last autumn. I would without hesitation, recommend the Piezography carts and Piezoflush to anyone like me who needs to store an Epson printer over a few months. Not only does it prevent the heads blocking but cleans them out over the storage period.