Here are a few ambidextrous sticks. Out of the 3 I would recommend CH hands down as it will probably last you forever. They make hella tough joysticks.
CH Products Flightstick Pro (kinda looks like the KA-50 Cyclic and the one I am using to build my simpit)
http://www.chproducts.com/retail/j_flight_pro.html
Logitech Attack 3 (own one, not a bad joystick but not great)
http://www.logitech.com/index.cfm/gaming/pc_gaming/joysticks/devices/302&cl=ca,en
Saitek Cyborg Evo (very nice feeling stick but cheaply made)
http://www.saitek.com/uk/prod/evo.htm