Jim,
I'm hoping you'll be carrying some Futaba-splined servos in the future. I hope you consider this line of servos:
http://www.hobbyking.com/hobbyking/stor ... entCat=189These are the Turnigy servos. So far, I have been a big fan of Turnigy everything since I have been using several of their products in RC and they don't seem to disappoint (manufactured in China WITH quality control, what a nice change!

)
I really would love to see these servos hit the US market more. They are one of the biggest bangs for the buck, and from what I've read so far, they are far more quality than the blue bird or the tower pro (pure junk IMO)....
If you click on each servo, there is a mechanical dimension of each servo...
The one that I really like are the HV-300 and the HV-767. They seem like the ticket to make the SES Humanoids to be monsters just like when it's outfitted with the HSR-5990TG.
Don't get me wrong though, I've only dabbled with the Turnigy stuff, the Hitecs are still my favorite since they have been a proven, reliable, high quality servos...
The other servo that I really like are the DS1015 from Ace Hobby/Team Associated. This is my FAVORITE servo and the ONLY one that I use in all my RC cars. Plenty of torque, metal geared, FAST transit times... Torque of 201 oz/in and transit time of 0.108!!!
Both the ACE Hobby and the Turnigy stuff uses the Futaba splines...