Whats the difference between TT Sub vs new 2010 Sub?

[jasonchow]

Hi everyone, im a new member here. I'm very confused as i don't understand what is the difference between a steel and yellow gold ceramic Sub(116613LN) vs the new 2010 Sub(116610LN). Please explain to me as your valuable information would greatly help my decision in buying either one of them.

Is there difference in the steel material?(i believe new sub is using 904L steel)
Different bezel?(TT sub using black ceramic vs new sub using black cerachrom insert, platinum graduations)
Is both model using same movement?(new sub using self-winding 3135 calibre)

I believe both price should be quite close, so why should i choose a new 2010 ss sub over the steel and yellow gold Sub then? Will they create a steel and yellow gold version for the new 2010 Sub?