The original is still the best (And always was.)

LEGO faces lots of competition. Firms such as Mega Bloks, owned by Mattel, and Block Tech make blocks that are copies of LEGO's building blocks.  The Block Tech packaging even states that the blocks are "Compatible with other leading brands".) 

I saw this Block Tech kit at Dollar Tree where it was available for $1.25 CDN. I was curious about the quality of the blocks so I purchased the kit.

Packaging photograph for  Block Tech "Space Heroes" vehicle

Looking at the photograph of the vehicle on the box it looked as if the kit would be easy to build.

Assembly instructions for  Block Tech "Space Heroes" vehicle

However, the building instructions do not match the photo and in fact it was impossible to build the vehicle using the steps listed in the instructions. (The attachment of the rear horizontal fins, under the wings, is further forward on the photo than in the instructions.)

It just goes to show that the original, LEGO, is usually the best. The Block Tech kit may be cheap, but it is just that. The finish on the blocks is not as good, the injection moulding marks are more obvious, and the instructions are just wrong.