3-9X sounds about right IMO.
Leupold, Bushnell, Burris, Vortex, Weaver, Redfield among others all would be good choices.
Take a look around here to get some ideas of what your money can buy.
http://www.opticsplanet.com/riflescopes.html
Use the filters on this site to assist you in weeding through the scopes you don't want.