please help with what? you want to know which one to buy? get whatever you think is prettier of cheaper or whatever. all the lib fans will say get the skate banana, everyone else will say get the arbor and then 3 random people will tell you to buy something other then those two boards. (which is probably the right choice :P)
If you read that then I have some questions. What do you like better about one board vs the other? do you have questions about specific designs on these boards? (base material, flex patterns) How did you narrow it to those two? when you answer those questions you will know what board you want.