Ok, after much deliberation I decided to go with the sealed version of the Tritrix because of two reasons: simplicity and portability. With my leaving for college in less than a year, I can't really haul around two giant tower speakers every dorm and apartment I move into. With the sealed versions, they are smaller, much easier to build, and easier to service if something internal goes wrong (less wiring-all of it can be inspected at once-and less distance from all the internal parts; the crossover and the binding posts can be inspected without much effort). I already have a ported subwoofer, so bass won't be a problem.
Now all I need to do is actually CNC the thing (I finished it in Inventor), purchase the parts, and build it.