This:
http://www.euroshooting.eu/en/index.php?detail=CZ200S
because right now its cheap, really nice and has potential to be upgraded into somthing very special. Has a few multishot directions, can be regged to get 70 odd shots, is lightweight, proven to be very accurate and is stunning imo.
Works out to be 333 quid plus shipping to your door as the euro is weak at the mo.
Rhys