I'm with you here Mbasko, the GPZ7000 is a fantastic machine, you would not get mine off me with a D9 dozer, eleven months on and we are getting on very well together and learning something new on most trips even after several hundred hours of use.
As you mentioned you have to divorce yourself from the GPX series, the 5000 in my case and make a fresh start with the 7000. I feel a tad sorry for those who got off to a rough start with the 7 for what ever reason/s and parted company with a now well proven machine.
For me, the 7000 has made a huge difference to my finds in terms of the type of gold located and the country from which it came.
I keep my finds separate in terms of location and the machine they were found with, the gold in the 7000 group is for the most part rough and reefy,while the 5000 collection is almost totally water worn and it all came from the one area, the 7000 gold coming off country that had been very well worked over by myself and others with 5000s and 4500s.
Just some random thoughts.
Cheers, SinHof.