The impressions for me may a bit more dramatic for me, because I'm coming from the S2 as opposed to the S3 like other people here. But the phones performance has been pretty crisp so far, I've only experienced a little bit of lag, but nothing major. I think I was streaming music through Dolphin browser, and doing other stuff when it happened. Display itself looks pretty awesome, but still seems to have to same problem of getting washed out in sunlight, though its better than the S2 in direct sunlight. The phone itself still has the plasticky feel, but feels very light and solid. It's amazing so far, getting everything configured while I play with all the new features such as S Health, etc