I have the model before this, CD-1BC, very quick heat up times (4-6 seconds max from idle, about 15 seconds from dead cold).
Heat capacity is mainly dependent on the type of tip chosen and you get a fine tip and wide tip as part of the package.
This soldering station allows you to change tips on the fly, that is, without waiting for it to completely cool, very useful when you need to switch from fine soldering like SMD to big jobs like tabs on a tube socket.
( I was a little concerned about wearing out the barrel but has not happened yet).
System is modular and the barrel and tips are reasonably priced.