I am abit of a newbie, so please have abit of patience with me, but I'm wondering why you'd need a windshirt when you've just bought a Rab Volt...its a hardshell and made with pertex shield, so I though it would be enough without a wind shirt aswell? If you wer to get abit chilly, maybes a mircofleece underneith or a thicker base layer?
As guy said in the post above, the Montane litespeed is a classic, the Rab nimbus is decent and has a stow away hood.
I'm after a windshirt myself at the mo and i'm pritty sold on the Buffalo windshirt...as soon as payday comes
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Hope you find what your after mate.