Which Bonnet Vent?

[mikeymikewakey]

I have a custom respray planned for my car and was thinking about sorting a good air field while im at it and fitting a decent sized vent on the opposite side to the original (similar to what the nana used to have when it was red).

Just wondering which style would be better suited for maximum air flow?

http://cgi.ebay.co.uk/SUBARU-IMPREZA-MINI-VENT-INDUCTION-SCOOP-96-Bonnet_W0QQitemZ200102824259QQihZ010QQcategoryZ431 18QQrdZ1QQcmdZViewItem#ebayphotohosting

http://cgi.ebay.co.uk/NEW-LOOK-LARGE-BONNET-ROOF-BULGE-SCOOP-RALLY-STYLE-VENT_W0QQitemZ170106597500QQihZ007QQcategoryZ23012 QQrdZ1QQcmdZViewItem
Opinions welcome :)

Thanks in advance.

[mikeymikewakey]

Not having the edit button is driving me mad.

I meant air feed, not air field.

Although having an airfield would be nice.

Mike