Hardest and deepest? Maybe, maybe not.

I love my WPT ($2-3K for a WPT makes buying a NIB Stern seem insane at current NIB prices).

It certainly has some hard goals, such as the hurry ups that are easy to ignore, unless you are gunning for the 20Mil requirement (or whatever it is).

Like LoTR and SM, I don't play to get to the end, I play to play well. I don't time out modes or try to max out this or that with some endgame in mind. I just try my best to make use of x3 multipliers as well as stacking multiballs with the best modes.

I remember getting a triple-triple jackpot and seeing 20 mil+ on the lower playfield display, that was fun considering I was doing my best to actually collect that in the chaos of multiball.

WPT for me is a great game because it gives you so many chances to succeed or fail every minute. It is not one of those "stack everything perfectly or the game falls apart" style PINs with a single(ish) interesting goal (whitewater and MB would be decent examples of this).

Most difficult i can see being argued against successfully. But how many older games (i.e. em's or ss or even sys 11 and wpc) have anything resembling this depth?