My Samsung printer is acting up. Can't print from an Apple device unless you installed the driver's before specific OS updates as apple blocks the install on newer versions. Doesn't always register replacement toners now etc.
I do have a harder time justifying the cost for how little I print anymore to justify replacing it and I'd probably just either resort to wait to print something at work or leverage a staples location or something. But you seem to print enough to still justify it. Of the 3 you linked in pretty much at the point I'd refuse to buy HP just due to their business practices anymore and I'd probably blindly pickup the brother printer considering how long the units have lasted in our office.
I have the Brother MFP that SSWilson mentioned as well. We had to exchange it once due to an odd wired networking issue it was having, but they didn't ask us to send the old one back with the warranty swap. If you're interested in getting new ink for it and setting it up on wireless, then you're welcome to have the old one. Other than the physical networking issue, it's a pretty solid unit.
One of the things I'm impressed with is how long this thing seems to go without drying out. We don't print a ton of pages (under 150/month probably closer to 100) but it still kept chugging along for 16+ months on the carts it came with.
I don't know if yours does the same thing as mine, but it runs a self clean if it hasn't been used for a couple days. So it may just be that the firmware is doing it's job to keep the ink fresh.