this cell technology is really amazing. i just bought this exact pair and my first few strides were noticeably different. i also have nike frees, and compared with nike's unique foam cushioning, the cell technology is even more unique i think. it definitely absorbs all the bumps and the mesh uppers gives good ventilation. this is definitely a forefront shoe, as i am a forefront runner. i also pronate slightly, and these pumas hold good support to the arches. so for short distances, this light, well supportive, forefront shoe is the best choice. i wouldnt run for more than 10 miles in these, i wouldnt recommend these as a training shoe, just an everyday shoe and light running. hope this helps... good luck with running!