Uses mainly for hunting, some range work and maybe some light moon gazing. Weight not a big factor using mainly from truck. Eye relief is a concern for I where glasses. Water proof. Going with a straight body. Interchangeable lens a plus. Been doing a lot of searching on sites. Some that keep coming up are Pentax PF65mm ED, Zen Ray 20-60x82 ED. Though I didn't see that Zen Ray is made in a straight body. One main decision is whether 65 or larger objective.