I've played both the 1st and now the 2nd installments of the RSV series and both are very impressive, tactical and good looking games.
However, the new game RSV2, is pretty much the same as RS1.
graphics are the same, gameplay the same, etc. This is not such as bad thing as when RSV1 came out, it was the best FPS on next gen consoles. But with games like COD4, which RSV2 borrows heavily from (the ranking system, almost identical/ability to shoot through cover/sprinting, etc.) the new game is looking a bit tired and, in my opinion, just not as good a COD4.
The online play for RSV2 is very good. It is a vast progression of vegas 2 with true "jump in" two player co-op, plus extra terrorist hunt missions, 13 new maps and 2 new game types, will have you comming back for more. But, not as addictive as COD4, and with less features.
If you liked the first vegas game, the chances are, you'll love the new one. But if you haven't played the first, it may look a little dated compared to tiles like COD4.
Storyline - 4/5
Graphics - 3/5
Gameplay - 5/5
Online - 4/5
Overall - 4/5