I like to play on hard and clay. I played on carpet for a few minutes and didn't like. But if I played on it longer I may get use to it. Never played on grass so I don't know how that feels to play on.
2 Youtek IG Prestige Pro Strung weight is 12.8 oz
4 Microgels Prestige mid, 2 of the Microgels strung weight is 13.1 oz, 3 Flexpoint mid