I See a lot of people using Mach 2 and while it is a functioning version it is not as well supported, the vast majority of work is being done on Mach 3.
So if you are new user using Mach 2 please post and let us know why you chose Mach 2 over three.
Thanks

Chad
By the way, If Mach 2 is working fine for you then by all means go with what works, I am just curious.