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.
Disclaimer: I make and sell Buffers. I also sometimes Modify, Build and sell preamps and amplifiers. My opinions are not intended to be sales pitches. I am a one man shop and prefer to spend time with my wife and family, i work full time on call and love to spend my spare time doing other things. I only make, modify or build things for those that seek them.