Hey ChasW:

I just built the Great Planes PT40 MKII and am training on it now.

This was my first kit so I can't really compare to others, but the folks at the field were all impressed with the plane, especially when they learned it was my first attempt. The plans give an option for more or less dihedral, (Novice or intermmediate). I went with the greater dihedral since I had never really flown before. Everyone comments on the "extreme" dihedral. Apparently no one ever builds a trainer with this much. Both instructors who have flown it with me have said the plane is extremely stable in the air. I have no trouble with it and consider it a good first plane.

Suggestions I would make no matter what kit you go with;

1) Invest in some tools. (or find a source to borrow from) It seems like a lot of money up front, but your success and satisfaction are at stake. The PT40 plans list all the rcommended specialty tools needed.
2) Take your time. I had to remind myself constantly, "Half the fun is getting there." Of course once I got it to the field and in the air I realized what B.S. that was. But the time taken to do it right pays off in safe and successful flights.