Good game and worth the money.
Weapons are generally all the same in the old RE game, they are there for a reason, don't be frustrated when you are attack by 8 zombies, bring out your SMG or shotgun and let it rip. Some people found it hard to do the reaction sequence, you should be glad there is only 4 possible sequence, and that is A, B, A+B, or shake your wii mote, there are actually 7, the different is you gotta smash or shake the button or wiimote, i dont recall they ask you to mash A+B in the game.
The reload was claim to cause alot of problem because it require you to shake your remote wildly. However some smart fellow in the forum has found out you just need a little tap with your index finger to reload which defeat this problems.
Overall, all the unlockable and weapons to unlock, and going for perfection is going to take at less a week or two. Replay value is great to achieve higher rank, just think about those idiot who paid millions of quarter to play rail shooter in the arcade.