To be honest, I would be careful with x800/x880 series since those parts are becoming very scarce if the printer needs repaired. They may have been good printers and many still out there, but if you want to make sure that the printer will function for a while and have the ability to be repaired with less worries, go with a newer model (even the x890/x900 series). The new P series have been updated with a Teflon coating on the print head which helps reduce clogs and many of the customers that purchased one of the models have been very satisfied with the usage. Now they also have cleaning features (time functions) to set so when it's not being used, it will inspect the nozzles and clean if needed.
Otherwise, Canon's Pro series are another great option if it's not being used that much in a month. We usually recommend Canon for infrequent usage as the head was made for that purpose and has many sensors to track for clogs. Now that the Pro models have a single, wider head, also has more nozzles to work with if there are clogs and cleans them after the print is complete. Canon Pro bodies are slightly narrower than Epson, yet more sturdier chasis to help better with more precise ink droplet.
Basically, Canon and Epson are at a very close print quality now with their new models and it mainly comes down to features you're wanting to make the best decision. If you like Epson, stick with Epson and go with the P6000 that matches closer to your 3880. Canon has good deals now along with many free tools/plug-ins.
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