You will feel a heavy tug even. I think it?s a little pricey but there was a $10 off $30 deal, so I bought some Dove bar soap with it to take advantage of those savings. Its shaking the room even more than before! Connection set up is easy. I was looking for a more academic and clinical experience and am disappointed. 5 and exchanged them for 9. Sound- its immense, well rounded and packs a punch. I rotate these with Nike Pegasus 35?s and I like the zoom flys better, especially for longer runs. Theyre cute (which is why they get 2 stars instead of 1) and thats about it. If you can swing the price difference, buy the ll bean option.