Hell yes !
I have a 7900 (now 5 years old), and 9890 ( 5 1/2), and both have performed very well from day one. I print for myself ,my wifes art, and customers. Mostly use the 9890 with MK for canvas and fine art papers, and the 7900 with PK for Premium Luster, Ex Fiber, etc. Every few months I switch PK and MK inks in both just to keep them exercised.
Started my 7900 today after an unusual lack of printing on it for a month, and it went right to work with no missing nozzles
I have stated many times that I believe they are somewhat self aware, and I let them do regular periodic nozzle checks. I just give them whatever ink they desire to drink when they need nozzle cleaning. I figure my ink usage into my overhead costs, and price my printing services accordingly!!
A few $ worth of ink down the drain, is more than acceptable to avoid head problems and costly maintenance replacements!