That time again

A few months ago I asked you SIMVers about a scope and now that Christmas is coming on I am still thinking about buying one. Again I'll tell you what I want it for, I live about 30-40 miles from a nice airport with aircraft flying over at roughly 10-15000 feet, so what would you suggest me buying...this is not for photography....unles you know of a camera that has a good zoom thats cheaper than a god scope
here is what I'm hopin to get or atleast close to
http://www.airliners.net/open.file/132340/L/
http://www.airliners.net/open.file/159911/L/
http://www.airliners.net/open.file/132339/L/
here is what I'm hopin to get or atleast close to

http://www.airliners.net/open.file/132340/L/
http://www.airliners.net/open.file/159911/L/
http://www.airliners.net/open.file/132339/L/