For the past few months I've had a chance to use the new Maven CS.1 spotting scope and now it's time for my long-term review. This is Maven's most affordable spotting scope and at $650, it costs less than a third as much as Maven's premium S series. It also costs hundreds less than its closest competitors - the Vortex Viper HD and Leupold SX-4. Beyond price, what really sets this 15-45x65mm scope apart is its weight. Tipping the scales at 40.4 ounces, the Maven CS.1 is more than a pound lighter than either the Vortex Viper HD or Leupold SX-4. Maven backs up the CS.1 with a lifetime warranty.