I bought one for my parents a couple of years ago since it was small, cheap and has 600dpi. At first I was surprised since it didn't have an on/off switch. Once you plug it in it is always on. I thought this would be a problem at first, but it goes into a low power sleep mode after a few minutes and doesn't make any noise.
This low power mode turned out to be a nice advantage since it is always on and ready for use when you want a quick print. With other printers they are too noisy to leave on for occasional use. When you want to print you have to turn it on and wait for it to warm up.
I was so impressed with this printer that I bought another one for myself. They use the same toner cartridges as some HP laserjets (4p I think).
I am not sure it will work on a stealth port. It was my understanding that these were serial ports only, not localtalk. Maybe someone that has one can answer that more conclusively.
One sure-fire solution would be to get an ethernet to localtalk converter such as an AsantePrint or AsanteTalk. These hardware devices allow you to link a localtalk network to ethernet. They don't need any software, but can be a bit expensive new (approx. $150). They're great if you have a network of computers and printers, but it is hard to justify the cost if you only have one computer and one printer.
I paid $200 for the first 4/600 and $150 for the most recent one. If it's less than $100 then grab it. If it's over $200 then look elsewhere.