LOTR.
Any pinball machine that needs something to pair with it will pair well with LOTR.
I believe in a two machine collection, the two games need to be as different as possible, while both satisfying the deep needs you have. If adrenaline is your thing then you will get it from LOTR. DTR will have you blood pumping every time, no matter how many times you get to it.
I have Met and LOTR and ten other machines. If I was down to two it would be those two.