Overkill? 30kg/403oz servo

[wallot]

i need at least 18kg servo for my heavy truck with bigjoes on commandos

I have Proline Steering kit
The new JR looks very good but it might be overkill.

DS8711 ULTRA TORQUE SX
Specs
Type: Digital Ultra Torque
Torque: 347 oz/in @ 4.8V, 403 oz/in @ 6V (30kg@6V)
Speed: .19 sec/60° @ 4.8V, .15 sec/60° @ 6V

Milder version

DS8611A Digital Ultra-Torque MG Servo
Torque: 260 oz/in @ 4.8V, 320 oz/in @ 6V
Speed: .18 sec/60° @ 4.8V, .15 sec/60° @ 6V
Gears: Alloy w/ metal/nylon B1 gear

Or the classic Hitec HS-5955TG
Speed: 0.19 / 0.15 sec @ 60 deg.
English Metric
Torque: 250 / 333 oz.in (4.8v/6v) 18.0 / 24.0 kg.cm
Size: 1.57" x 0.78" x 1.45" 40.00 x 20.00 x 37.00mm
Weight: 2.18oz 62.00g

Weakest and cheapest

Motor Type: Coreless
Bearing Type: Dual Ball Bearing
Speed: 0.24 / 0.19 sec @ 60 deg.
English Metric
Torque: 200 / 250 oz.in (4.8v/6v) 14.4 / 18.0 kg.cm
Size: 1.57" x 0.78" x 1.45" 40.00 x 20.00 x 37.00mm
Weight: 2.18oz 62.00g

Or am I just crazy and Futaba S9351 High Torque will do?
FUTM0236
Volts Torque Speed
4.8V 153.0 oz-in. 0.16 sec/60°
6.0V 192.0 oz-in. 0.13 sec/60°

I just cant decide. JR servos are supposed to be one of the best.