I have seen postings from people that have used the Mach 3 post processor as opposed to the one that comes with your Shopbot.

1. Why?
2. What are the advantages?
3. What are the disadvantages?

If I'm reading the web page right, Mach 3 is only a $150.00. Not a lot to spend if there are advantages to be gained.
Are there additional hardware modifications to the bot that have to be made?

Any insight would be appreciated, or I'm I completely misunderstanding what I'm reading.

Thanks, John