In my Onas I have switched to using some new JR HV servos. These have allowed me to remove the regulator and run straight 2S Lipo power. On the elevator I am using JR DS378HV's. These are in the same case as the low profile 378's that were in the airplane before, but they are now rated for 2S. On rudder I am using an 8911HV servo. This is way overkill for torque, with a rating of over 400 oz/in. But it is a fast, extremely smooth servo. The ailerons were the biggest change for me. I have always used 8411SA's, as I have always found the extra torque to feel better to me. But Pete Goldsmith recommended I try the new 3711HV servos. These are the size of the 3421, and they seemed like they might be to small to me. But I have to say they are working great. Before anyone asks, all of these servos are metal geared with no plastic option. But they sure do seem very tight and smooth to me.

So if you want to get rid of one more piece of electronics in the model, you can use these HV servos and drop the regulator.