If you plan on backpacking with the scope, then weight may be a concern. The 65 is lighter, but if you mostly view wildlife from a vehicle or short distances, go with at least the 80. Swarovski has the module system, ATX 30-70-95. Its pricey, but if you can afford it, thats the best scope out there for viewing and digiscoping in low light hours. I have had both scopes and wouldn't go with the 65 personally. You can always find deals at cabelas or bass pro shops. Also, the Phone Scope | Digiscoping
works great with about every phone out there.