My latest two KFL+ have been from EHpro and Tobeco, both are very high (and equal) quality. I can't speak about the Taifun models, but the kayfun Lite Plus clones are great and I don't feel a need to look for anything better.
Not sure about the quality w/ Tobeco... my screws rusted on me... they werent stainless steel. Who knows what they were made of, hopefully not plated brass..