Choosing a new cam?

I have read the cam information sheets and still have little idea of which cam I should choose, I am simply after some more power.
The car is a daily driver, with a new bottom end, fuel injected with a lightened flywheel and extractors. At this stage there has been no headwork done aside from the normal hardened seats and guides and eyebrows in the port to suit the sierra EFI manifold. Although i will consider doing some at a later stage.
Any help would be greatly appreciated.
Raenier
The car is a daily driver, with a new bottom end, fuel injected with a lightened flywheel and extractors. At this stage there has been no headwork done aside from the normal hardened seats and guides and eyebrows in the port to suit the sierra EFI manifold. Although i will consider doing some at a later stage.
Any help would be greatly appreciated.
Raenier