I read all of the same mixed reviews you have been reading. Honestly, have had the same hesitancy as you are probably having. I stumbled on a Hook about a week or so ago and frankly couldn't be happier with the purchase. I love to play it. My kids love to play it. My wife who thought I was nuts for wanting to buy a pinball machine probably loves to play it more than any of us. The one I found was in overall nice shape. Everything worked on it. Cosmetically, the playfield is a 7/10. The cabinet is probably a 6/10. I expect to do a bit of repair/cleanup on the cabinet just because I want it to last a long time, but it isn't anything I have to jump on right away to be able to enjoy it. The Rufio ramp (very top right) on mine (and probably most other folks) is cracked and repaired with epoxy/glue and seems to hold up pretty well, but I do intend to replace it. I found someone who created a reinforced version, basically extending the metal plate further up the ramp. That ramp replacement and a new set of stickers for it appears will run about $140. Pricey, but not terrible. The Windcoster ramp is nearly impossible to find. Mine is in good shape, but has a couple of small cracks that I expect will get worse over time. I'll likely find a reproduction to purchase to have on hand, but I haven't found anyone that actually has these in stock. With the stickers, most are going to end up running you $225ish. And the main plastic launch ramp (not what it is called I'm sure) on mine is in really good shape and I don't intend to replace it, but order a fresh set of decals for it. The swing bars entering both the Windcoster ramp and Baseball Jackpot? ramp are a little rough resulting in them getting stuck, but those are readily available for purchase for cheap. Or, I may just pull them out and go to town with some steel wool and see if I can revive them. I do have one minor annoyance on my machine - when the ball kicks out to the shooter lane, about 50% of the time it makes the machine think the ball was shot and "misses" the skill shot from the shooter lane. Certainly not the end of the world, we just miss some points that way, but my gut tells me there is an overly sensitive switch that is getting triggered. I may just have to tinker around and figure out what is causing it. Aside from that, I'm extraordinarily pleased with my purchase, and I considered many machines in my price range. I settled on this one because I enjoyed playing more than most in my price range. One of the pluses for the specific machine I purchase is that NVRAM was already installed in place of the batteries. I don't know if you've done the research, but batteries on a board they way they were built until fairly recently is a bad thing because they leak acid on the boards and cause damage. Your choices are basically install a remote battery pack, upgrade the board to a lithium button cell batter, or install NVRAM. The most desirable of those options is NVRAM. For someone familiar with the work, it's a pretty simple procedure, but most technicians are going to charge in the $150-200 range to install it. For me, it was worth paying a little more than what I was going in expecting to pay. I went in ready to pay $3,000 for my Hook, and I paid $3,200. Note, the asking price was $3,500, which I felt was a bit excessive.
I wish you luck in your decision, and don't hesitate to reach out if you have any questions. I think you'll love Hook, and don't let someone's bad mojo steer you away from something that insterests you or appeals to your pinball desires. YOU are the only one that has to like it. I don't think the value of these things are going to go down anytime soon.