Garmin Tactix Charlie, Premium GPS Watch with Tactical Functionality, Night Vision Goggle Compatibil worth to buy? Thanks for it if those of you who have purchased Garmin Tactix Charlie, Premium GPS Watch with Tactical Functionality, Night Vision Goggle Compatibil could share about what you think of the product. I would love any extra info, as it is quite pricey as $856.00 and I just want to know it is good before paying for it.