I took a shine to Borreload because of how it's able to precisely and systematically dismantle the opponent's field, and Red Dragon Archfiend (Red Supernova Dragon) for being a giant nigh-unkillable nightmare.
... but yeah, it's not fun at high levels of play and building a new top tier deck every time new cards are released is too expensive, and meta stuff isn't as fun to me. Lol.
Some of them are. The ghosts all have low, medium, or high pull strength; the only ones with high strength I know of are Mr. Luggs (Dining Room), Biff Atlas (Exercise Room), and [Mister] Sir Weston [M*****f*****] (Cold Storage). Those take a few tries, but the only one I give up on is Sir Weston (taking too long to get to, a high pull rate, slippery floor, and obstacles serve to make him an exercise in frustration). The Floating Whirlindas (Ballroom) aren't too hard, just try and pull them off the rotating dance floors so you don't have to keep reorienting your direction.
Other than that check around and try stuff out. A number of Blue Ghosts are around; hit furniture before you turn the lights back on to try and find them, keeping your flashlight on so if one shows up you're ready to stun and grab it since they don't respawn. They drop loads of treasure and usually a gem or two. Use the Game Boy Horror to look around for cheese; if you scan it a Golden Mouse will show up, grab it for a load of treasure like with the Blue Ghosts (one's under the chair in the Fortuneteller's Room). Catch all the Boos; the 50th one drops an immensely valuable Golden Diamond (you have to get 40 anyway). And mess around with the elemental abilities, like watering the plants and throwing flames into the oven. If you water the seed in the Boneyard during each chapter it's available, it'll bloom into a giant flower that produces another Golden Diamond (and a load more treasure besides).