Pretty much all the printers out there will work with Apple or PC, they're all USB connections these days so it's all the same port to them.
Same for the sub $100 printer choices, they're all pretty much the same printer. The ink cartridges will cost more than the printer but you can get empty ones refilled cheaper if you're the daring kind of person. I don't recommend it as my experiences have not been good. Lexmark seems to be the leader in the cheap printer market, they work ok for what you pay for them. Generally, anything under $100 or so are considered throw-away printers where they work for a while and die or the ink runs out and you look at the price of more ink and say to yourself: 'Damn, I could buy another printer for that much' and then go out and buy another printer instead.
If all you want is text and or B&W copies an inkjet will do you well enough. Look for something that does around 20 pages per minute (ppm).
That being said, I recommend the Epson line of printers for overall quality and life expectancy. I've used them for years and only replaced them when I needed more resolution (dpi), all my old ones still work well and have found new homes.
Basically, it comes down to size. Pick the one that fits the space you need.