Try it with a Electrovoice EVM 12L or a Celestion G12-65. Everybody recommends them for Fuchs D-style amps. I'm using an Electrovoice with my ODS and tried it with a G12-65. Both are awesome depending on what you are looking for (Carlton, Ford, ...).
I'm also owning several Boogie cabs with EVM 12Ls and the difference between old Electrovoice-speakers and new ones is extreme. The very old speaker from my Boogie MKII (one of the first ones made) sounds awesome, no comparison to the kind of sterile new ones.
Every speaker is different, unfortunately there is no simple rule like "this speaker is good for that and this one is good for that"