Take it with a grain of salt, I race buggies... no bashing, just racing.
IMHO if you care to bash (even just a little) the truggy is far better off.
When it comes to racing, truggies are capable of hammering out fast laps comparable to a buggy, therfore the truggy fits your needs for bashing/racing.
As a matter of fact I know and race with a lot of truggy fanatics, and they would love to see me buy a truggy, but I have held off waiting for the Jammin and Mayhem trucks to show up at the track and get the bugs worked out.
Again IMHO, truggies are far more forgiving to set up and drive than a buggy, this makes life much easier for someone just getting started .