I think it depends on the size of a collection. Having one 90s pin like Wh20, while a great game, is going to get old pretty fast and that's why games like hobbit, AIQ, TSPP, LOTR are great for small collections as there are many shots and deep rule sets. I've had tspp since 2003 and still haven't seen everything.
In larger collections, it's really hard to play and understand the more complex games as they really require you to spend a lot of time with them (and read 25 page rule sets). For example, I love the way AIQ shoots and the rule set is pretty unique, but it is way too complicated with placing the gems and leveling up characters, more than I really care to really learn so I just play the basics and try to pick up what I can along the way. If it were my only pin, I'd have a much better grasp of it.
EHOH is probably the best newer game to come out in a while. It's not complex, but has a lot to shoot for and is really easy to grasp. Kind of a good mix between a 90s type game and more modern pin.
I liked the way JJP potc shot, but 36 characters is just too much.