The Drake is still available.
We have not had any complaints about the flushing of the 1.28gpf.
If you want you can remove the black float on top of the flapper and this will change it back to 1.6gpf.
The map test:
Drake 1.6gpf 900
Drake 1.28gpf 500
Drake II 1.28gpf 800
They changed the name of the Gwyneth to the Drake II, not sure why they changed the name but it is not the same. In my opion it is a better looking toilet and has more features than the Drake.