Always use escrow. You will loose your paypal money if you send first because paypal wont return your funds. They see its you who paid. I've been tricked by some established members to send first( bla bla we are not safe you pay by paypal it can be taken back). A lesson my mom didnt thought me i guess. Don't trust people online.
No escrow will do for paypal. they all run away from it. No escrow will agree to accept and keep paypal funds. best is to deal with established paypal exchanger companies. To find them is so hard but when you do you will be happy.