Well, 140 oz-in of torque is still a lot, its just not 400 oz-in like the more expensive servos.
I'm a 3D newbie. I'm not going to be doing full throttle blenders (only half throttle). I'm still learning rolling circles. I can do a basic hover but only if I'm looking at the top of the plane. I don't know that I need 400 oz-in of torque. I wonder sometimes if a lot of decisions on what equipment to use are made on peer approval or one-up-man-ship. I have no interest in either of those things, I just want a reliable, good flying plane that I can have some fun with.
Now, in the time I've just spent researching which servo I should get, I could have been working and made enough money to pay for the super fancy 7954-SH. Maybe I should stop wondering, go do some work, and buy the super fancy ones and not worry about it anymore!