My 1st Pin was a Williams Blue Chip about 3 1/2 years ago (still have it) .. played it to death for several months then thought a second one would be good .. now have 6 (averaging about 2 a year) and still want more.
Damn I sure wish I started this hobby about 20 years ago though!
Still plenty of time and opportunity out there !
I bought / traded NINE machines last year and sold THREE. I don't think I will do anywhere that amount of "shifting" this year !
You just need some good fortune