When I started collecting about 3 years ago, I started with all 90s Bally/Williams pins, 8 of them, because that's what I was familiar with. After about a year, I added AC/DC Premium. Now, a couple years later, I have 4 Sterns and 4 B/Ws. Modern Sterns have a different feel than B/Ws. Not necessarily better, but different, and I appreciate the variety. That being said, I still plan to add MM, Tron, and perhaps MB at some point.
So, try some Sterns out and, if there's something you love, add it to the collection.