I work at a company that has about 60 networked laser printers. They are all Lexmark and have been for years. We have electronic forms design software and it is more convenient to have all the same brand printer. HP and Lexmark use different PCL codes for their input trays and I have to create different definitions for them if I mix the printer manufacturers. We generally use two sizes of printer--one that is an enterprise class--about 40 pages a minutes with at least 2 drawers--and one that is a smaller model. Currently we are buying Optra T640tn for the enterprise class model, and Optra E342 for the smaller one. The E342s, however, are proving to be very problematic. On top of that, our printing repairman has told us that there are almost no spare parts for the E342 printers. Lexmark expects you to send it in for service when it is under warranty. After the warranty runs out--youi're in trouble because of the lack of spare parts. Sending it in is a problem because we either have to have spare printers sitting around or have the user go without until the printer comes back. On top of that, we have to keep packing materials around to package the printer up to be returned.
So, I am considering changing our printers to HP. The change will be painful, but when it is complete, things will be simple again. My problem is that on HPs website their warranty terms don't seem any better than Lexmark's. They have statements like, "One-year return-to-bench limited warranty", and "One-year, return to HP authorized service center warranty". So, that doesn't sound any better than Lexmark. However, if spare parts are available to fix HPs printers on-site without sending them off somewhere, that would be a plus.
I am interested in anyone's experience with corporate printing and Lexmark and HP printers. I will split points between multiple answers because I want to hear from multiple people.