Sadly only got the one machine (GN'R) but when we move house and I have more room I'm looking at fattening up the collection. I could probably sneak another one past the missus now and find somewhere for it. Hell she promised me that I could buy a TAF once we were married and that happened over 3 years ago but Ive never followed thru with it.
I actually imported the pin myself about 6-7 years ago as I thought the prices of them locally were a joke. I made sure the cabinet and playfield were good on the one I bought then set about tidying it up. Learnt/taught myself a lot through the process plus had a couple of mates that were quite experienced that I could fall back on. I found it good fun and quite therapeutic to do after work each day. I eventually sold that machine when I bought a second GNR I saw on ebay for $2K about 12 months later and it turns out it was in basically mint condition.
I actually got into playing pinnys back when I was at uni. Cut my teeth on Back to the Future, Cyclone and the first Simpsons pin.