I agree with what's already been said. Find something that fits your personality and the personality of the dance you're doing.
An aside: that may be the root of the totally inappropriate comment. Probably worth asking although, as you said, that's not the topic of this thread.
What do I like to see in studio showcases? People having fun and enjoying the accomplishment of pushing themselves a little bit beyond what they're comfortable with. Sometimes they nail it. Sometimes parts of the showcase are great while others aren't. Other times, the sky falls on their heads.
A ballroom studio, to me, is a different atmosphere from a competition or pretty much anything else. I've gotten on my feet, cheered and clapped for many pre-bronze students who just got on the floor for the first time, when I'd talked to them and knew they were nervous. I didn't care what or how they danced. They had heart.
So I guess my bottom line is that your showcase depends on what you, the student, want out of it. Every person in the audience has their own agenda. Mine is having fun while supporting newbies as much as I can. Others want to climb up the ladder and start kicking butt at comps ASAP. Other people have lots of other stuff they're looking for. There will always be people who love what you're doing, people who hate what you're doing and people who don't care. Most, IME, are in the third category. :wink:
So I'll throw a question back to you. What do you want? :-D