If you already have servos why not use them, as I said before they are better then the best ones were 20 years ago. I flew an ACE 30% Extra 230 with Futaba 148's for years with never a problem. I did add the BB conversion kit to them which provided a little more shaft support. I never had a servo fail in that plane and believe me I push that plane around.

All this talk of servos and classic planes got me a bit nostalgic so I went to my junk drawer and pulled out some Pro-Line PLS-15's and marveled at how big they were. Gosh I remember cramming them into my Phoenix 7. When I upgraded from Pro-line to a Futaba 8JN in 1980 with FP-121 servos I thought wow these are small and how easily they fit in the fuse. By todays standards the 121 are large.