I joined this site a couple of weeks ago so Im not in the group build, but I finished my tiger a year ago.
Its the most fun I have had. it is a great challenge to build, it is not enough to be a good model builder you also need some technical skills. When you open the box you won't believe your eyes. There are so many parts. First I read the instruction booklet 2 times, then I made a detailed "batle" plan, and then I started building. The only thing I added was metal tracks, but I am looking at the suspension from www.backyardarmor.com
and the reduction gears from www.customrcmodels.com.
The group build isn't finished, go and have a look at it, those people have some great tips and tricks, its 56 pages so there is enough to read,
I like this model so much that I am thinking about getting one more. All I can say is go ahead buy it, its worth every penny.