I have Gzero by Rapid Output. It probably costs about the same as Gibbs.
Actually the training issue is very important. If you know someone that has been using what you are getting, it would be very helpful to be able to ask for tricks when you get stuck. If their year of maintenance and training will cover that then cool.
The problem is you have to spend quite a bit of time to learn your system initially, and figure out the quirks. If you are only going to make a dozen parts over the first few months, I think that it is to much to spend.