hey

i have been thinking about how you can buy a digital servo for ur cars. just a couple of questions:
1. why is it better than the standard ones?

2. when buying one does it matter if say u have a jr xs3 controler and u buy a futaba servo?

3. what is a good price for one ( i have seen some between US$80 - $110)

4. if any one have one which is very reliable and sml please tell me about it and which one it is.