This is what I was going to say. If you remember playing this game once or twice in an arcade or a buddy's basement, the things you're going to remember are a) the diverters slow the game down, and b) it's a clunk-fest. And that's 100 percent true. But that's not giving the game a chance. It's like trying Scotch once; all you catch is the booze, and you're missing the point altogether.
I bought one after I'd played maybe two or three balls on it; first time I'd ever played it. Machines are hard to come by here, and I'd been eyeing a WhiteWater this fellow had for quite some time. He said he'd move on price on his Shadow if I bought it instead. And yeah, right off the bat, it is BRUTAL. If you try to do the skill shot from the right flipper up the left ramp, and you hit the side of the ramp? It's like finding out your best friend slept with your Mom. It's the biggest slap in the face ever.
However, also true is that the game flows. Anyone who's spent a good deal of time with the game, specifically long enough to feel comfortable with the diverters, will tell you that setting up the skill shot is great (and yes, this is going to take some technical pinball geek-ery to make any sense):
1) Start the game.
2) Set both diverters to feed the left sides of their respective ramps (and therefore the left inlane).
3) Plunge the ball.
4) Hit the left ramp. Diverter runs the ball to the left lane.
5) Hit the right ramp from the left flipper. Diverter runs the ball to the left inlane; while this is happening, redirect both diverters to feed the right inlanes.
6) Ball rolls down the left inlane. Hit the right ramp again; this time, it will feed the right inlane.
7) Shoot the left ramp, the ball redirects to the right inlane one more time.
Seven steps; four flips of the flipper; HUGE amount of flow and satisfaction; not too easy to do. If you're good, you can then shoot the left orbit from the right flipper, then shoot the upper loop with the upper right flipper for a six-way combo. I can't recall off the top of my head, but there might be some way to roll together a seven-way combo; I think it might be in the Pinball 101 DVD?
Long story short: if you say the game is a clunk-fest, you're right. And for first time players, it'll put you off the game in a hurry. But if you get to the point where you can make the shots, it's so much fun. I have two DMD games, WhiteWater and The Shadow, and no contest, the WhiteWater would be out the door long before The Shadow ever leaves.