What is the best FSX payware/freeware addon for carrier ops?

Should I get Flight Deck 5? 4? or just Acceleration? I have the deluxe FSX running on Vista, I tried installing AIcarriers but it keeps having a "simconnect" issue (unable to connect). Which add on has good aircraft, and good carriers? could I use them in free flight? thank you for your suggestions. I want the realistic FSX carrier ops add on available