Please advice me on 1/8 Nitro Buggy & Truggy

[jasonchua]

Hi,

Hope that someone can advice me. As I am new to this hobby.
I want to buy 1 set of 1/8 Nitro RC Buggy and 1 set of 1/8 Nitro RC Truggy.

Which one is better & faster one speed transmission or two speed transmission?

Hope that someone can advice me on which model of the below is the fastest and best for competition.

1) http://www.hsphobby.com/product.asp?bianhao=94885/BT9.5

2) http://www.hsphobby.com/product.asp?bianhao=94081

3) http://www.hsphobby.com/product.asp?bianhao=94760

Please also advice me on which of the 1/8 Nitro RC Truggy below is the fastest and best to use for competition.

1) http://www.hsphobby.com/product.asp?bianhao=94886/TT9.5

2) http://www.hsphobby.com/product.asp?bianhao=94761

3) http://www.hsphobby.com/product.asp?bianhao=94085

As for the RC Transmitter I will be using FLYSKY RC FS-GT3C 3ch 2.4GHz LCD GT3C Silver Transmitter & GR3C Receiver.

Hope that you can advice if the FLYSKY RC FS-GT3C 3ch 2.4GHz LCD GT3C Silver Transmitter & GR3C Receiver is good or not.

Thanks.