In my experience, on the business models, HP is very very good. Although all-in-ones are not nearly as reliable as standalone models for everything. For basic InkJets, HP would not be my top pick, Epson or Canon probably, although HP may be 2nd or 3rd.
If you look around, and a color laser all in one will fit your budged, they are historically more reliable than inkjets. Make sure you look in the business range though, not the regular consumer models. Although usually more expensive, the business models use stronger parts and more robust engineering. Speaking in general terms though, you could end up with a dud, or the vendor may want to skimp on something in a model you pick, overall, business Laser printers are way more reliable than Ink Jets of any type, and more reliable than consumer Laser printers.