Power HD vs Savox Servo

[jasjeet]

I see a lot of guys here use the Savox 1258 Servo, i bought a Power HD servo for my touring car and has done me well no problems.

But im nearly swayed to buying the Savox, then i notice on hobbyking they have this Power HD Servo:

Power HD 8312TG Digital Titanium Gear Servo 57g/13.5kg/.10sec

Operating Voltage: 4.8V / 6.0V
Operating Current: 300mA / 400mA
Operating Speed: 0.11sec.60º/ 0.10sec.60º
Stall Torque: 12.0kg.cm /13.5kg.cm
Size: 40.3X20.2X37.2mm
Weight: 57g
Dead Band: ≤2uSec
Motor: Coreless Type
Ball bearing: 2BB
Gear: Titanium

Price £20.15, half the price of a Savox.

So i ask you guys, why is this servo so cheap? Is it any good? Anyone else use Power HD?