If it helps, we camped next to a family with one this summer and we had a good look at the 600 at a tent show in May.
We found it to be a well made tent and would be a great tent for wet/windy camping as it was all enclosed and sealed.
It has a large foot print and looks big from the outside.
I personally found it too claustrophobic inside and i could only stand up straight in the middle,everywhere else i had to stoop. We also thought it would be harder to keep an eye on our little

's as there wasn't much of a panoramic view from the narrow porch and entrance.
Saying that the family next to us loved it and it met all their needs. Took them around an hour to put the tent up.