Solar does not have as much bang as the plug in units. The string and tape type is easier to work with if you are going to move it, the wire will crimp and break when rolling it back up. The fiberglass posts are great, but they will give off fiberglass splinters after a few years. As far as fencers go...get Bulldozer, best on the market and it will keep the weeds off the fence its self and will only run you around 100.00.