I guess I have opened up a can of worms.
My thoughts...
Enthusiast - someone who has a passing interest in something but does not progress to the next level of actual ownership. EG: A pinball enthusiast may throw a coin into a sited machine or attend a pinball meet but despite having the disposable income/space to own one chooses not to.
Collector - someone who makes an actual purchase of a machine to house in their home/shed/garage and maintains it in working order for personal (or others) enjoyment and. It may be one, it may be 1000 - the only restriction being space or disposable income for that individual. The fact that someone has actively sought out to purchase a non-mainstream product like a pinball machine to put in their home (as opposed to a bike) makes them a collector in my mind.
Hoarder - someone who purchases for the sake of purchasing and due to an unrelated disorder cannot sell/dispose of anything, pinball machines or other.
Maybe the poll question needs to be polled?
