I just finished Resident Evil 5 yesterday and i must say that overall it's a good game but no great or amazing nor is it as good as it's previous installment.
First thing first, Resident Evil 5 have some of best visual in video gaming, it's one of the highlight of the game, the visual is so impressive that every texture on screen looks amazing, from face expression to the little detail on their clothing..wow. Mix with it's visual and amazing cutscene, you got one enjoying movie to watch, every cutscene is directed cleverly, perfect camera angle and stunt action..it's entertaining. Voice acting is good too.
Gameplay wise, the story mode is shorter than RE4. it's divided into a few chapter in every level, but all of them feels short and quick. though it's short but the pacing is good, there no moment in the game where you'll feel bored. While the game lets you play co-op offline and online, playing with friends is much more fun than playing solo because the game is designed to play with a human. But if chose to play singularly, the AI itself is good enough to hadle itself in the game, so you don't have to worry about stupidity. the game have a very high replay value, you will keep coming back over and over to upgrade your weapon and collect emblem and stuff.
Overall, i give it a 8.5 out of 10, praise it's visual and gameplay, but critize it for short length and story telling.