Guitartrek~
I'm a guitar player as well but I don't like micing up acoustics. (I don't even own one anymore)
I do a lot of midi programming and if I program the guitars I can change the tempos and keys without having to rerecord everything. Also I can change the actual guitar software. It just gives you more tools for producing.
It seems to work better for acoustic guitar. For distorted electric there is no substitute for the real thing.
Guitarhacker~
It's almost a carbon copy of the original minus and acoustic guitar outro.
Thanks for listening!
Mark