I played Normandy '44 7-8 times with a friend and picked up Holland '44 which I played 5-6 times with different people. I tried Ukraine '43 once and started a game of Ardennes '44 but we didn't get too far into it before a vomiting kid put an early end to my offensive.
I ended up selling my copy of Holland '44. The game was decent but I felt like we'd really explored what it had to offer after the 4th play session. Much like Normandy '44, it started to feel a bit too samey and that we were just repeating the same exercise over again and just hoping for different dice results rather than exploring new tactics. I guess that's the drawback of games that focus on recreating a historical event when compared to games that are scenario based. There just isn't the same variety as one can find with a LnL title.