Im looking for a LRF and have noticed there are differences(i.e. 1600 and 1600-B) in the models. Im gathering that since the only thing on Leicas website is the 1200-R and 1600-B that they are the latest models. What, if any, are the differences between the 1200 and 1600 models? The only two features important to me are the angle indicator and compensator and to change from meters to yards. Thanks guys!