I am putting the hextronik in my savage. HPI Savage's need a really strong servo. People have used them on savage central and they really like them. I wont have it running until I get my mamba monster max and finish my e-savage conversion this summer. I'll run it with a 6v rx pack and see how good it works.
Anyway, how can you go wrong with a $7.57 servo? you know what, I am starting a thread on this servo right now. link for thread is below.
http://www.rcuniverse.com/forum/m_6817647/tm.htm