I realised about 6 months ago that I just don't like 12" cabs.
I'm currentlyusing a traveller 102p and like it alot. I tried it side by side against a NY121, which I instantly disliked, and a few other 12"'s and it just gave me more of the sound I like.
My first ever bass amp was a Eden EC10 - a small 10" practice combo; I loved the sound and perhaps that set my tonal preference.
When I joined a band and upgraded to a GK head, I got a GK 410 for gigging and a Hartke Hydrive 12" for rehearsals. I loved the 410 but never warmed to the 12" cab. I upgraded that to a Barefaced Super Compact, another 12", thinking maybe it was a Hartke thing but I still didnt get on with it so that went too and hence the MB TRV 102P now being my cab of choice.
Playing with the EQ is definitely a good idea, even with my traveller 10" cab I'm a long way from flat but perhaps like me you just prefer the tightness and punch delivered by 10s.