Well...my Turbomatic arrived today!!! Upon comparing it to the Ruby (155), it does indeed appear to be more T-shaped. I can definitely notice that there is a lot LESS saddle on the Turbo compared to the Ruby, right at the "transition" area. I'm a tad bit concerned that there is less real estate for my butt to sit on, but I haven't even installed it yet so I guess I'll save my official "review" until after I've had a chance to ride on it.