Nathans -
For 98% of the people out there, save your money and buy the $90 35C pack. You save weight...and $$.
If you really have it geared up to pull a lot of power in bursts, then yes, the 50C pack may be more worth it.
Remember, all Venom Batteries come with our Lifetime Battery Replacement Plan, and we have a customer service department should you ever need to use that warranty.
--Paul Susbauer
Product Development
Venom Group International