Soldato
On a serious note I'd quite like a couple primes and an UWA to be honest, possibly even a fisheye. Don't have a need for anything telephoto at all so they don't interest me.
UWA and Fisheye will be great for UW work, primes for walking about and awesome DoF
On a budget the Panny 20mm and Oly 45mm are pretty sweet. I've got them both an got some change from £350.
My next purchase will be the 9-18mm.