Quoted from DaveH:

I’m a Pro guy. Partly because I’m cheap, but mostly because I like the games more. Sure, I’ve done my LE phase, but my heart is with the Pro games.
And here is my big differentiator: I grew to hate upper playfields. They block the view of the ball, and always feel like a gimmick to me. Stewie Pinball was the first one I played a lot, and thought it was awesome... for about 10 plays. Then just ugh. After a couple shots I felt like I was wasting time there.
As for MET, Pro. I just don’t like the hammer blocking my view. I LOVE the action and concept of it, but hate that it is in my way.