I have some stupid Question
 

Which one xbox Version is good:
v1.0 or V.11

Which one Biso version is good:

X2 4976.02 or x2 4977

And Which one is good for Matrix modchip, did someone try x2 4977 ?

Well there is no good or bad ver. of the XBox. If you have your heart set on a solderless chip than the ver1.0 would be the one to get, but if you can solder any one will do.

Go with the X2 4977 BIOS b/c it is the lastest BIOS out.

And the Matrix is prob. the best solderless modchip b/c of its LEDs to let you know when you have it lined up right.