Sounds like for most people, gimbal is the way to go, which is probably why the most practical company, Rega, uses that design exclusively for the best value in tonearms.
I never understood the appeal of the hard to handle, wobbly unipivot, but for some people it can sound better and is worth the trouble I guess.
Like everything else in this hobby, it's a matter of what you're willing to do or spend to get the last couple % of improvement you perceive.
A couple contributors here have written unipivot arms off, and I have also. Although my dream table is an SME, they don't mention gimbal or unipivot in their Series V arm description. I guess it is a modified unipivot?