This is a difficult question for me to answer, since about 18 months ago I regained lost interest in not playing or following pinball for years.
I think the catalyst was seeing WOZ, never saw anything like it, also I really hadn't played a Stern until last year at the Expo.
So I had 3 pins RS (sold after 8 years), T2 (sold after 12 years) and Pin Bot (still own about 22 years). I added pins over the last 15 months and of those games I like what I own, really maxed out on room and don't plan to sell any at this time.