This pops up once a month roughly, and I think has now been classed as a marmite game.
Personally I love it, graphically it's gorgeous to look at, especially when walking through the grass and the dawning sun shines through the bushes.
Yes there's some AI issues but it's certainly not as bad as other games but no where near as good as, say, CoD.
Only gripe I had/have is with the infamous bug about the save games, I lost my save about 40% into the game (just after I'd crossed the border) and while the patch fixed it (or is meant to have), I've now hit the other bug where the Supply camps aren't dishing out missions so I won't be able to get all intel.
Other than that I think it's a great game, it's a far prettier version than Just Cause, has a huge game world to explore and a good story.
For £10 I really don't think it's a bad choice.