Do you already have the line on the Shadow? If so grab it. You'll have zero trouble moving it later if you want, I know like 5 people looking for one right now. You might not want to let it go though, it's a really great game.

RFM does zero for me, I'm not a Pin2K fan. But they're really easy to come by, people dump them all the time after getting tired of it, so if you regret your choice you could sell the Shadow and get an RFM without any problems.

Shadow $2500-3000 depending on condition if it's decent. A lot of wear or issues could put it lower, but a good one is going to be in that range.

I just straight up don't enjoy playing it. I suspect it's a polarizing title in that regard. I don't begrudge anyone else enjoying it, but I wouldn't keep it in my collection (my max right now is 5) even if I was given it for free. It's not some kind of "it's not real pinball!" or anything like that, I just find it tiring to play really quickly. I was playing one set to 5 balls, and honestly I just wanted to drain by ball 5 so I could walk away.

Shadow is a "one more game" in contrast.

I'm touched that anyone is excited about it over my translite, but for me it's really about that fact that it's a great game. It's challenging, unique, fun (that's important!), the music and sounds are great. Really the only thing that was a ding on it was Baldwin, but obviously there's a fix for that now if you want, so hey.

If you're willing to share you should post about them in my translite thread:

http://pinside.com/pinball/forum/topic/the-shadow-new-original-alternate-translite-speaker-panel-cards

People there are actively looking for the Shadows.

Cool. But guess what, your mystery machines that are apparently secrets and able to stay available until you can afford them don't really mean a whole lot to the general market.