Helios 150mm (6"!!!) binocs, magnification up to 200x, $7295. Much less expensive than the Fujinon 25x150 binocs ($16,500). Of course, if one of the world's best comet hunters uses 20 x 120 binocs, we can be sure it's for a darned good reason -- like maximizing the field of view given the magnification. In any event, that new $600 10" dob from Orion is looking better to me all the time! With my old eyes, the more light the better.