I did the same as you, I started with tropical communtiy fish, then started an mbuna tank. I have now sold off most of teh community and am no interested only in mbuna. There's someone calling soon to pick up my last 3 gourami's then its just the denison barbs and I'm 100% malawi .
Drooling over Trophs at the moment, OR a big tank with lots of different Tangs