Overall, Fantastic Four: Rise of the Silver Surfer is better than its predecessor. The acting, effects, and plot are all a step up. The movie also has more memorable and emotionally poignant scenes (such as when Ben and Johnny sit in a bar discussing how they would spend their last minutes, Ben scaring the bear away...).
I'm still not crazy as Julian McMahon as Van Doom - and he still says corny lines in the middle of battles - but he's not so central to this movie. On the other hand, the Silver Surfer makes for a much better villain - mysterious, cool, and powerful. I like the end - a bit of The Day the Earth Stood Still (Two-Disc Widescreen Edition).