Many thanks for you comments. After a lot of searching, head scratching, and trying various different programs, I've gone for DXO photolab 8, it's a little expensive, but I tried the free trial first, the results are just fantastic, unbelievable quality. Their helpdesk online are also brilliant, very patient and helpful, I'm still on the basic settings, easy to use with brilliant results. I just thought if I'm scouring the countryside for great wildlife pictures, I should probably use a good program.