I know I just did the least advisable thing ever - I bought a Hassleblad on Ebay! It's only arriving in 10 days, but I'm already crazy about it. It's my first Hassie - a 503CW kit (80mm - A12). I hope it's working as advertised; I'll be sure to let you guys know how it turns out. I think I got a pretty good deal (US$ 925), provided everything is working fine.
Did some intensive research prior to buying and ended up choosing the 503CW - hopefully the first of many Hassies to come.
I'm looking forward to contributing to the forums.