I think you should go with your instinct. Relying on others opinions when it comes to pinball machines usually doesn't pan out. Have you played all of these titles? So many people have such different tastes it's hard to rely on others. Since you own a Metallica, maybe buy one with a different layout (i.e. Not a fan layout). LOTR, Simpsons would be choices to ponder.

only stern choices?

I just got a gb pro and I love it. It was a toss up between that and wd. I love them both. Spider man is super fun as well. My order goes gb, sm, wd, tspp, lotr.

I think "original" Spiderman would be Gottlieb Amazing Spiderman.
But I know what you mean, and Stern Spiderman would be my choice.

I'd go GB. If you like SM have you also considered ST? Great game with a similar layout that is at the end of its production run so you can still get one nib if that interests you. But definitely play them all and get the one you like best.

LOTR. It is an absolute classic. The depth and play are simply the best. Great modes, great multiballs, great everything. I've always thought that everyone should own one at least once. The game only comes alive in the home.

If put TWD as second place in that list. Brutal, but well written and fun.

Spider-Man next. A good solid game. But some people find it too easy to keep playing over time.

I don't like GB and I don't find it fun. I don't think the rules match the playfield. It just doesn't work for me.

TSPP. I still don't get it. I never have. And that's just me. My stupid reason is that I hate where the pops are, so I never bother to learn the rules. For me, I want a game to shoot well to make me want to learn the rules. And I've never gotten past that on TSPP.

All just my opinions.

With the options as you described them go with the HUO TSPP.

It's got super deep rules, lots of fun stuff to do and accomplish and is fun to play plus it is a good alternative to Met in terms of feel. It's the only game I have let go and then missed.

And when you get to the Springfield mystery spot..... Pure bliss.

Get TSPP.

lots of b/w titles....... afm, mm, totan, tom, indy etc..........

I haven't played LOTR, but of the rest of those choices, it would be TWD hands down for me.

Nice. I'd rather have lotr than tspp myself. Love the theme.

There were no bad choices on your list, and LOTR is a very good game.
Congrats and enjoy!

Good choice. Enjoy