Lots of choices
The big change in most optics is when you go from the high 400's to well over $1000.00. The Bushnell Legend line is good glass for the money and well below $1000.00, Nikon makes good glass in the $500.00 as well as Pentax. Great value for the money can be found in the Celestron Noble line real nice roof prism 10x50 and 10x42. Another lesser know brand is Kowa, a highly regarded spotting scope manufacturer, have a newer series called BD42 they would retail in the $700.00 dollar range. FS