Wings over series, Il-2 series

Can someone tell me if you liked the Wings Over series (Wings Over Vietnam, Wings over Europe, etc.)
I'm really on a Cold War aviation (Century Series fighters especially) kick right now and I'd like to know if these games are realistic, fun, and decently smooth running.
I would also like to know what you all thought of Il-2 and Pacific fighters, and also Lock On, as I just bought the Ultimate Flight Collection, which includes all three (only 20 bucks now, amazingly!).
I would like to know if the other versions of the Il series are worth the extra money and if the games are, in comparison with CFS3 realistic, challenging, and if the combat is better than the lame 3-4 fighters CFS3 gives you?
I'm really on a Cold War aviation (Century Series fighters especially) kick right now and I'd like to know if these games are realistic, fun, and decently smooth running.
I would also like to know what you all thought of Il-2 and Pacific fighters, and also Lock On, as I just bought the Ultimate Flight Collection, which includes all three (only 20 bucks now, amazingly!).
I would like to know if the other versions of the Il series are worth the extra money and if the games are, in comparison with CFS3 realistic, challenging, and if the combat is better than the lame 3-4 fighters CFS3 gives you?