I started off with a vpin and loved it, but now after owning a number of real pins I find the physics unbearable.

VPX is now at the stage where it looks like so realistic and the community are doing some amazing work, but the ball movement and the way it interacts with the various objects is so fake. One would thing it would be easy in this day and age to replicate physics consistently, but it's still very much down to the values assigned by the table author. There is also flipper lag due to the time it takes to process the video image, this has got better with technologies but it's still there.