Solar was hit and miss for me on the D772, but they are less than 20 bucks, I've gone through 2 then quit, still have one nip, but gonna use for shift servo or less important function. One thing that I have found in the last 5 years, is that with servos, you really get what you pay for. BLS-177 are insanely good I know someone who runs 2s direct to the servo (no BEC), so that's 8.4V @ full charge, probably pulls over 600 in-oz, all alum. case....
Try a Savox 1270-TG? IMO these are entry level re-buildable (gears), decent servos, I have one and bought it used is going strong in the Yeti...not sure on Sav's CS.
I like HiTec, have a half dozen of their servos, awesome CS.....I know what you mean about servos, my first BLS-177 was like 230, as much as a Bomber, stupid good servo though....
Good Luck! Hope this helped...
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