I have built quite a few Sig kits and find the quality above average
as far as design goes. They are definitely a builders kit and
take some time to build compared to other kits depending
on your selection.
I built the small Clipped wing Cub also and as long as you take
time to keep it straight it is a good flyer. Definitely alot more
chance to misalign things in this kit due to a high parts count .
I also have a Sig Liberty Sport bipe in the bones but have
not covered it yet. I understand it is a good flyer but is a builder
also.
Maybe you should have a look at one of the lazer cut kits
mentioned above like the Hog Bipe or?

Good luck..
Sam