We found these, and loved them so much that not only did we buy one of each set, we became resellers.
They are 100% compatible with LEGO brand blocks. As far as quality goes, they are as good as you can get – we collect the name brand, and would not sell these if we felt they were a poor value. There is a sample page from one of the manuals pictured.
The Nimble Pinnacle is 8.75" long x 8.5" wide x 5" high. It is 237 pieces and comes with two minifigs. The propellers can be rotated for vertical takeoffs & landings.
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