Best rest lenght between sets for 10 x 10s?

[gidemon]

Im hearing some people doing 1 min of rest and some people resting only 30 seconds between sets when doing the 10 x 10 program or gvt... so wich would be the correct and commonly used lenght of rest between sets to make 10x10s effective?

is it 1min for large body parts and 30 for small or 30 for all and so on...

thanks