Escrow.. at least through Escrow.com, isnt really any more secure than Paypal. Theres ways to cheat it.. Personally I'd prefer to use Moniker Escrow every time, since they offer a true escrow service (they take physical possession of both money and domain), but they are rather expensive. I guess it just comes down to comfort level. If it's a reputable member from a forum, I'll pretty much trust them upto $500.. Maybe more, just depends. Generally speaking though, anything in the in $400-500+ range, I'd prefer to use an escrow service for. That would just be too big of a hit for me to take.