I play football year round on turf and grass, flag and tackle. I've owned a lot of cleats including the adizeros, under armour blurs, nike's speed, merciless, and superbad. The alpha speed are the most comfortable out of all of these and they require no break in period. I weigh 230lbs and play a variety of positions and my feet didn't hurt at all after playing in them. These cleats offer enough cushion and enough support for somebody at my weight and plays as hard as I do. They have great traction on both surfaces I listed above. The only bad thing I can say about the alpha speed is they do run small. I normally wear a 12.5 in nike cleats and had to buy a 13.5 in these, and they are still snug. I have a wide foot, so definitely take that into consideration when ordering them. I urge anyone looking for the support of a mid and the feel of a low cut speed cleat to buy these, especially for the player who weighs 200lbs plus.