The Kreo building set make for great competion for the LEGO brand. I especially like the character family of Transformers. Even though its either robot or alt mode, most of the robots are well designed and I personally like the little transformer figures the larger sets have with them. Kreo are LEGO compatible, although I couldn't cross over the brands. Only issue is the stickers have a tendancy to peel off after a time, though this is not enough for me to dislike the overall product.
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