Both names/abbreviation make perfect sense IMO, but I believe that the majority here, including me has been accustomed to the abbreviation BTT, while the last two later “T” makes it even easier to pronounce; Therefore it will be nice to continue with the Abbreviation BTT because changing to BCT will have to take people some amount of time to master, we will even see a situation where people will still be writing BTT instead of BCT or even write BTC. I vote BTT.
I haven't been able to vote but I'm on the BCT more because for me it makes sense that it's the abbreviation,
Bit
Coin
Talk but at the end of the day, I don't think that this will matter a lot because we're all different individuals and I guess use what you're most comfortable with, what works for you sometimes doesn't work for me at all.