Although the old 1.x purists might hate it, this is still a great game and, in my opinion, a step forward for CS
But now i certainly do. This is the most addictive game ever, seriously. OK, so new players might be scared away by the high difficulty and the constant waiting between rounds, but after you've played for a while, it will be second nature, and your scores will look a little more impressive, though it will take years before you can nail a 20-0 score which you see some people getting.
The graphics are fantastic in this game, using Valve's unbelievable Source engine. It lends a new dimension to Couter-Strike and acyually makes it more enjoyable. However, the physics have been toned down a little because of the danger of lagging on the servers, but this is no big issue.
Overall, Counter-Strike is a great game which goes highly recommended to any FPS multiplayer fan, or any CS veteran.