WW is killer. The more you play it, the more you'll understand strategy. It's deep for a system 11. I'm on my second, and it's going no where.
BK2k is decent, but for me, it's lacking in shots. Upper pf games aren't my thing. I like longer shots. The music is great however and the thing is gorgeous with leds.
BOP I sold awhile back. It's really a one shot wonder, as you know. And also, it feels too congested.
Get WW. ORRRRR pinbot or taxi. Those are the top 3 system 11 pins imo. However, I'm still looking for a diner to compare (sorry MOF if you disagree)