for reliability & performance use:

3x HS65's on the cyclic (newer than 56's, and mount better but slower(more torq) not well suited for tail)

depending on what gyro youre using:
1x HS56 on the tail if analog gyro
1x 9650 if you can afford it. probably need a metal tail mounts too since it's bigger and heftier. gy401 or gyro w/ digi output

if you really cant afford HS65/56's,

then those futaba 3110's will work on the cyclic
probably would still buy a hs56 on the tail at least.

on my own heli, i have 3x hs56 and 1xhs81 on the tail. the hs65's werent out yet when i was servo shopping. if i were to do it again, id get hs65's on the cyclic. using hs56's on the cyclic requires redrilling the servo mount and possibly improvising spacers. hs56's have offset mounts in the middle of the servo rather at the top plate and are not bolt on. the hs56 on the boom brackets are bolt in however.