spotting scopes

Anyone have experience with spotting scopes. Ive never bought one. Havent really dealt with but one or two. A good friends fiancee called me to ask about one for him as a secondary Christmas present. Shes also looking at some parts for his Dodge so lets put a $150 limit. I told her check cabelas, natchez, sportsmans guide etc. but would like to help her get the nicest she can. Anyone ever deal with a barkas (sp?) like cabelas has on sale. Any fed back would be appreiciated because this is the guy who always helps my wife buy for me. thanks Bryan