Servo height is more limited by the servo saver. If you can’t get the end links high enough within the wheel to level the tie rods you would need to go old skool with an angled servo mount.

The now discontinued sanwa SRG was equal response modes as all other top end servos and was always an excellent choice. The PGS is SXR compatible to take full advantage of the M17. Doesn’t mean it’s not still awesome with any other tx.