I am seeing some mixed (some times poor) reviews of Burris thermal scopes. I have a chance to buy a new in box Burris BTH 35 Thermal 2.3-9.2x35mm Multi-Reticle scope for $670.00. I can get the Burris BTH 50 Thermal 3.3-13.2x50mm Multi-Reticle for $870.00. These are from a huge dealer that is dropping the Burris line (that is a red flag if I ever saw one). I am a new user to thermal. Should I bite the hook of save up for a hogster?