Thanks for all the info guys i am well chuffed…so i decided to re-vamp my kit completely…i traded in some of my gear and sold some on ebay…so my bag consists of

1 x Canon 40D
1 x Nikon D70

1 x Canon 100-400 ISM lens
1 x Canon 17-85 ISM

1 x Sigma 50-500 Nikon Fit
1 x Nikon 70-300
1 x Nikon 28-80

so think this should cover every occasion with all my trade ins and PX it cost me about £1000…so well worth the effort i think