Servo selection help needed

[aruna1]

Hi I came across these servos and I need your help to figure out whether this servo is worth for its price.
I want to know is there any downsides of these servos and whether it can be used in robotics without any troubles.(I heard dead bandwidth has considerable effect but have no idea how it works)

Servo 1:

here is the link
http://www.rctimer.com/index.php?app=goods&spec_id=60

and here are the specs




Servo 2:

http://www.servodatabase.com/servo/towerpro/mg90



Thanks