You are a very, very, wise man. I am impressed by your wisdom....SERIOULSY!! Some of those people on craigslist are INSANE fa' real. I actually bought through them before but it never occurred to me to look for a keyboard there. I have decided to go with the Yamaha S90ES...second hand that is. Hopefully I'll find the right deal, especially now that I have gotten the help of my fellow LGmers. Thanks a million to alla yall. 
Yeah there are some wierdos there. If I'm selling something small, I never meet them at my house, but when I sold my piano I had no choice.
A few months ago there was somebody selling a Porsche on craigslist, so a couple drives to go buy it, They bring a ton of cash with them and when they get get to the guys house, they were robed at gun point. I say that to say you gota becareful.
Maybe in one aspect, but if he said Craigslist is best, then he doesnt account for the lack of a community collectively trying to build great reputations as sellers and buyers as is commonplace on Ebay. With recourse, I might add.
I see your point, but I'd rather just make an offer for a quick sale, no worries about being scammed, shipping etc. And you can check out whatever you are buying, before you pay. and there are some great deals on there.
But there is a downsie, sometimes you gotta play "email tag" and thats annoying, and sometimes you have no shows, but all of my craiglist transactions have been cool