Once again it is personal choice! My read is 5er has more storage and is roomier inside due to taller ceilings. Combine that with the basement where much of what would go in the bed of the TV. Many of the other items can also be delt with with a little out of the box thinking.
They naturally tow more stable than a TT, due to the physics of the connection directly over or slightly ahead of the rear axle.
Yes, they are taller, one needs to be aware of your height.
There are a few draw backs, it is four steps into our 5er.
We love ours and enjoy it.