[asterisk-users] Which version to use: 1.4 or 1.6 or 1.8

[bilal ghayyad]

Hi All;

I need to know which version of asterisk to use, if to be 1.4 or 1.6 or 1.8? 

For example, when to decide that I have to go for 1.6 or I have to go for 1.8? 

Regards
Bilal