When making that kind of claim, you should back it up.Trace is far more superior by a long shot.
I don't think you synchronize Sleep though. Just Burn, Paralysis and Poison. I think I'd go with Trace though. :) No need to explain it as people have already explained it.Both have their uses, however people will know which you are using so be aware that synchronise is not going to surprise anyone unless you intentionally absorb status on the switch. Nice switchin for Spore pokes.