Sighting Compass

I'm looking online for a sighting compass and have seen prices ranging from $12 to $170. Will a cheaper one be OK for surveying properties? Anyone have any recommendations?

When I am running property lines this is what I use. I have used it on forestry contracts requiring accuracy of +/- 3 compass degrees and never had a problem. I find the peep compass to be considerably more user friendly and accurate than sighting compass. The only issue is it does not have a declination adjustment.

http://www.forestry-suppliers.com/product_pages/View_Catalog_Page.asp?mi=13031&title=Suunto%AE+Vista+KB%2D20

This one is the cream of the crop. if you don't feel like mentally adjusting for declination. I rarely take mine into the field becuase it is so shiny.

http://www.forestry-suppliers.com/product_pages/View_Catalog_Page.asp?mi=13013&title=Suunto%AE+Precision+Compass+KB%2D14+with+Declination+%26+Optical+Adjustment%3CBR%3EPrecision%2C+accuracy+and+easy+operation%2E