I liked all three as well.
2010 was very cool on the big screen. Thought it was fascinating and had some moments of wonderment. It wasn't great, but film offerings like 2010 were quite rare at the time.
Trading Places was fun simple story. Eddie Murphy had plenty of LOL moments for me. Horcrux2007, you can't see it without a parent or guardian, it's Rated R. It's da law.
I vote Poltergeist. Best of the three.