I have several Nikon Monarchs in 3x-9x-40mm on several rifles and I love them. I don't know how light you want to go, but this particular scope seems light to me.
Leupold Vari-X IIIs are about the same weight.
You might want to consider compact scopes. Leupold makes some, and Nikon does too. You shouldn't have a problem finding a good scope for $600 or even less.
Zachary