My personal headcanon has always gone games first, then comic books, then whatever novels can fit. Games take very high precedence in my headcanon due to the work of Trek actors (Shatner, Plummer, Warner, the entire TOS and TNG casts in 25th Anniversary/Judgment Rites/Final Unity etc.)
One thing that ticked me off about the Romulan War books was that the Star Trek Legacy game very clearly stated Mayweather was about the Enterprise NX-01 during the Romulan War (a date was given in the game as well), yet the novels made it clear Mayweather wasn't aboard at that time due to some fight he had with Archer. And as soon as I read that, I was like--ok, these novels aren't canon to me anymore

, I feel the game actually voiced by Scott Bakula has precedence...
Chang and Gorkon's history from the Klingon Academy game automatically takes precedence for me over whatever happened to them in the novels.