I love my maverick 88. I have many 400/500 mossbergs, but my 88 is used most. Its light, durable and fairly easy to strip and clean.
If you get the 88, make sure it is the later model with 2 action bars. Early ones had a single action bar which could be pumped off axis causing it to bind or grind as its pumped. Mossberg has made almost 7.5 million 500/88 shotguns, so its a pretty proven platform. Turkish shotguns like the churchill are ok, but they can be hit or miss. Your mileage may vary.