CAE buffers are not the only ones out there. EMG sells one and Alembic still sells the stratoblaster. i make clones of jerry's tiger buffer, which is like none of them.
the emg and stratoblaster have boost that can raise the Db's while the cae and tiger buffers do not.
"The process of selecting the tone on the guitar is an aesthetic process like any other, so you try a lot of different things. Most of the things I’ve tried I’ve tried in live performances" ~ Jerry Garcia