I have several Canon printers. I have been using the Niagra CFS with my I950 for over a year now. YES , I too have some air problems but correcting the occasional air problem takes alot less time then refilling carts. Media street's inks are less then perfect for canon comparisons, so I use othe ink. I refil carts on a second I950, and my I550. I have had occasional clogs but canon replaced the print heads free of charge, I've owned Epsons with CFS but they are too damn slow and they have slipped behind in quality over the last two years, plus their "chipped " carts took extra steps to refill and left me not ever wanting to purchase another prinnter from them. I'm going to take Colorbat up on their offer for thier CFS. I print calandars and will be willing to try their inks which are supposed to be great. Will post again after I trade & can report.