Look at Horton, I have been using a Horton HD175 for about three years now. Sighted in for 20 yards and has a 10 yard increment adjustment on the bow. I have not ever experenced any problems other than a string going bad and have killed numerous hogs and several deer with it.

Texas just allowed this year crossbows in the archery season so I will be shooting a few slick heads in October with my crossbow and the monster if he gets into range.