The Tahoe is a good looking vehicle and always has been, parts not to hard to find, and you can get one pretty cheap now bc of gas prices. As well as that most models have counterparts from HD models, so suspension and drivetrain upgrades not to hard to find.
And like Memph said Big system big vehicle. I always looked at it like, if you don't want a van you gotta go with a full size truck w/ a shell or a suburban or Tahoe or something that size. I guess you could shove 10 -18s in a Rodeo or Jeep but you might run out of room at some point, Jared's batteries in the bumper and what not are a good example of running out of room inside.