Or would you suggest another brand, like HP for that matter?

Never had a laser one but I know that I had 4 ink printers the last decade not lasting very long and quite expensive on ink, so a good laser is always cheaper, I would say.

If the printer comes with parallel or serial rather than only LocalTalk it also can handel a PC, if there are drivers, right?

So, an Apple Laser Writer with parallel interface could handle my wife's laptop as well, right?