Quoted from HoakyPoaky:

TNA has more going for it than just destroying reactors & rinse/repeat. While the gameplay is straight forward, it is really difficult to master. I love that type of gameplay. Bowen makes EVERYTHING look easy, so judging TNA based on watching him is completely misguided. Most people on average are lucky to destroy 3 in a single game.
The challenge lies not only in destroying reactors, but in maximizing the reactor bonus first, then destroying the reactor during multiball for the 3x multiplier. Scoring huge points where the fun lies (for me at least) & proves a long term challenge at home. If your only goal is just to see how many reactors you can destroy, you are missing a whole other level of strategy on TNA. And the difficulty of making those shots increases as the game progresses (alternating orbits, restarting multiballs, etc). Oh did I mention scoring super jackpots at the scoop during multiball? Yeah good luck scoring those on a regular basis.
What looks like a simple game to some is actually layered with scoring depth. Plus there's the insane lightshow, the music & sounds, the classic 80's Bally design, co-op gameplay, the ass-kicking nature of the gameplay that forces you to play better, and on & on. It's a long term keeper for me. Different strokes for different folks tho.
I only played IMDN once, and thought the ball times were long, the shots were easy to make, it had great scoring rules, and it's pretty sweet too. Just depends what you're looking for. You want a modern classic or an 80's classic?

Quoted from lpeters82:

There is a lot of good advise here already, and I'll start off by saying that I love both games. I think you are exactly right with this statement, "I have 11 pins and wanted TNA to be something different from the majority which are all DMD/LCD pins." TNA will certainly be something different in your collection. I believe others have alluded to the fact that TNA plays similar to 80s games, which can be found cheaper. I think that's also true. Do you like 80s games? I would argue it's the best "80s game" that was ever made, but perhaps you feel there is a better value getting a Iron Maiden plus a much cheaper 80s game. It would be hard to fault you for that. In a small collection, I'd probably go with Iron Maiden. In your collection, I'd probably go with TNA. Personally, if I were in your shoes, I'd pick up a TNA and look to trade Spiderman towards an Iron Maiden. Then again, I also like Spiderman. I just feel like you have a few games that give me a similar feel and adding both would increase the variety within your collection. Good luck with whatever you decide.

Quoted from rotordave:

Rai - not having a dig - but I’ve never seen anyone try and talk themselves out of buying a pin than you with TnA.
If you have to double guess yourself all the time, maybe it’s not for you? Not every pin is for everyone.
One good thing about TnA is they do not seem to be hard to sell if you don’t like it (as long as you’re not to greedy on the sale price ...)
rd

Quoted from Crile1:

I don't get the love for IMDN. I put a few games on an LE and have not had the desire to play more. Stood next to one yesterday and just looked at it and the animations in attract mode and just felt "meh" about it. If you like 90's games that have mechs that interact with the ball, then IMDN is not for you. I think that is why I have no attraction to it. Instead of playing IMDN, I put some games on the GOTG, MB, Adams Family, and TOM that were nearby. Whatever choice you make, I hope you enjoy your decision. FYI, RecBar in Louisville, KY has an insane collection in their pinball room. So much better than before, check out their interview on SDTM.