I've enjoyed playing TMars over the years, and have acquired all the expansions through "colonies."  I think the alternate maps, Venus, Preludes, and Colonies add something to the base game, but am not crazy about some of the mechanics and added complications.  

I've heard / read about the newest expansion, Turmoil - but I'd rather hear from some folks who've played it.  Is it worth the time/expense to incorporate it into my game? 

And most importantly, will I need yet another, larger box to hold the components?  :)