Need new board and suggestions!

Hi,

I've ridden a Burton Bullet 160 for the last couple of years that was given to me with custom bindings. I wanna get a new board thats not mentally expensive, any suggestions?
I'm about 5'10" with size 43 (UK 9) feet, I wanna board just for freeriding thats got a bit of flex to it and am considering going down to 158 or something as the Bullet has always felt too big and heavy for me. Basically I just need something thats got a really quick response and feels more agile than the bullet. Also need new bindings, nothing flash, I kinda like basic bindings. I've got these Burton Customs with the toe straps at the mo and I hate them!!!
Anyway any help would be much appreciated!
Cheers
S