Quoted from Bud:BH is better looking and has a better backglass but HH is the better pin, it's a harder pin and the scoring on it is awesome. I'd say spend a lot of time on each. HH has really grown on me lately. Why not have both for the price of a new stern pro?
my opinion is 100% opposite. Haunted House backglass looks cool, but the game kinda plays like garbage. too many pointless flippers, no multiball, no speech, and no risk associated with the lower playfield.
Black Hole is a very underrated player. getting multiball is a big challenge, and the lower playfield represents a compelling risk-reward decision. build up the multipliers, and you can potentially roll the scoreboard over down there. screw up, and it will cost you your ball.