What are you printing? Whether you need a color laser printer or inkjet printer largely depends on what you intend to print. Inkjet printers are best for printing photos, but text quality sometimes isn't as impressive (although still fine for most uses). Color laser printers shine at producing sharp, flawless text, but generally mediocre photos (though again, still fine for most uses).
How much do you intend to print? If you print a lot, pay attention to the printer's recommended monthly duty cycle (the number of pages the printer can comfortably print month-in, month-out). If you expect to print big jobs, buy a printer with high-capacity trays so you won't run out of paper mid-job. Some printers allow you to buy and tack on additional paper trays.
How fast will you need to print? Cheap personal and small office color laser printers are slower than their more expensive corporate counterparts. However, unless you print a lot, speed might not be vital, and even the slowest printers print fast enough for low-volume work.
Will you want to print on both sides of the page? Automatic duplexing is a timesaving convenience that allows printing on both sides of a sheet of paper. Duplexing, though essential in a busy office, may not be worth the additional cost for home and home-office users, who can duplex manually -- printing odd pages first, then flipping the stack over and printing even pages.
How will you hook your printer up to your network? Most -- but not all -- color laser printers can connect to your computer or network either wirelessly (via Wi-Fi) or wired (via Ethernet or USB). Many can print directly from your smartphone or tablet, and some can print directly from cloud sites like Dropbox and Google Drive.
What are your system requirements? Make sure the printer has drivers for and is compatible with the operating system of your computer -- especially if you are using older computer hardware.
Consider the cost of consumables. Most reviewers attempt to calculate cost of use, but they usually rely on the manufacturers' estimations of cartridge life and arbitrarily determine the cost of replacement toner (which may change). While that isn't a purely scientific method, reviewers do find drastic differences in the cost of use. Judging from reviews, more expensive color laser printers tend to have a lower cost per page than cheap color laser printers.