I agree SIG kits are some of the best.

The only ones that I remember that were a little difficult were some of the first Berkeley kits they put out after acquiring the line - especially the 1/6 scale Cub which had the 2 piece wings that were held on to the fuselage by means of "S" hooks and rubber bands inside the top of the fuselage cabin. And although the wing strut material was only hard balsa, they were functional struts. Not beefy enough to handle the wing loading except if you only flew around in gentle circles! I know regarding that one - I lost a wing on one during the first loop I tried! SIG later redesigned the Berkeley kit so it had a 1 piece wing to make wing attachment much stronger. With a 1 piece wing, the struts were no longer a critical component. But some of their kits are definitley "builder kits". If you don't like building, better look at something else.