Using scottish logic I would go for what evers cheapest. An hour in your log book SEP is worth the same when it comes to CPL hour building what ever the plane type.
Speaking from experence the door on the warrior is decent, no blowing open and sucking your charts out. And circuits are easy because you never lose sight of the runway.
But if you are doing alot of hours / night i will always take the cessna. No fannying around with fuel pumps and swaping tanks every 30mins. And for x-c its alot easier spotting landmarks.
MJ