This is a good solid game. The controls (which are configurable) are quite arcade like and not exactly an accurate simulation of flying. Nevertheless, the game is enjoyable. As with any American produced WWII game the dialogue and scene setting are very Americanised, and do lack a little in accuracy. I'm not sure how many American pilots were flying for the RAF in 1939, but I doubt it was very many.
Back to the game, the range of aircraft is good, there is not always much to choose between them in terms of aerodynamics and speed, but you certainly feel the difference in firepower. If anyone has played the excellent Secret Weapons over Normandy on the Xbox or PS2, they will see certain similarities here. Secret Weapons was superior in the storyline and dialogue, but being able to use the Wii's controls lends Angels a unique flying experience. This is what makes the game so good.
The missions are not terribly challenging, and to be honest they don't take too many attempts to complete, but there are lots of missions, so there is a good degree of longevity with the game.
Overall, I would certainly recommend it. It's not a sophisticated flight simulator, but it is jolly good fun! Tally-Ho Alge!