Pitboss UK i would recommend putting up some of each if you have the space. More and more players have signed up at some of the less honest or tricky bonuses and have been burned and just want to play an honest game.
If someone wants an orange sell him (or her) an orange, if they want an apple give them and apple.
Some players also percieve if a casino is offering a big bonus up front they must be taking from the back.
Just some food for thought.
Brian