I haven't played the others so I can't comment on those.  I love my IJ and find it a lot of fun.  Downsides, the mode hole is a PITA.  The stopper has to be set up perfectly and Pinbits impact foam installed or the ball will bounce out more often then in.  And this is the single most important shot of the game.  Even though it is a wide body, the lower PF is narrowed so it doesn't feel like a WB.  But, the ball does seem to bounce around alot compared to others I have played making for slower play if you are not accurate.  The ramp entrances are narrow which makes accuracy necessary.  Make sure the PoA is in good shape as I have never seen one for sale.  Music is good and not annoying.  Has some funny quotes.