The biggest issue with GRID 2 (and GRID 1 to an extent) is how much of a realist are you?
If realism and or simulation of how race cars really handle is important to you, then GRID 2 is the worst of the bunch.
A comparision I like to make on how the cars feel in Grid 2 is with Ridge Racer as the handling in GRID 2 follows the same overly eager grip that allows you to take a 90 degree turn at 120 mph.
While the realism of GRID 2 is no where as dumbed down as a title like Ridge Racer, it IS pretty basic.
If you have ANY experience in driving an automobile over 90 mph, then you will know
that the cars in GRID 2 do not behave realistically at all.
Graphically the game is fine. Nice effects that don't bog my system down.
However, the gameplay and races themselves tend to get stale rather quickly.
Once you have raced a certain type of race don't expect to see much difference in setup, length or quality of the AI from race to race either.
The AI doesn't "get better" or any such luck, what you start with is what you get.
The multiplayer in GRID 2 is dead (in the US at least) and has been for a long time.
I have yet to find one single multiplayer session located in the US and no one ever joined any sessions I created.
In the U.K. their seems to be a bigger following to non-oval type racing and so you can usually find more multiplayer options, but not many Steam users are willing to fiddle with Steam settings to get locked into U.K. race servers.
All and all, GRID 2 was a big step back in the series with features missing, or massive DLC to get the whole package required.
I hear GRID Autosport (Grid 2.5?) is a step back to the Grid 1 roots, but to be honest GRID 2 destroyed my faith in the GRID franchise to keep me away from any hope of liking it again anytime soon.
If you are looking for a good arcade racer, GRID 2 is fine in short bursts.
However, if you are the type to invest in a wheel and pedals and know the difference in how a car handles with or without automatic gear box, then I would stay away from GRID 2.