BTA's have a rep of being easier to keep and less light needs, but from alot of reading here it sounds like they wander much more.
In my 90 I had both my Sebae and LTA for 4 years b4 going bigger so I could keep both and still have room for coral.
I love my sebae, and it hasn't moved from it's spot in over 5 yrs now, even when I transfered I just basically put in same spot and it stayed.
Just need good light, moderate flow(I'm at 40x turnover) and at least 5" from any coral.
One sebae in your tank would be cool, but fair warning, add more and plan to go bigger!