Lowes has a flat black, Icon series for about $20/gal, makes a great first coat/primer surface sealer defect detector. dries in a heart beat and if you thin it a bit, apply with a foam roller, you can keep texture to very low and get a sealed surface for more control the far more expensive duratex top coat. it also sands easlily enough it you want to minimize grain raising or mdf surface swelling.
THE BIG ROOM: Mitsy DLP 73837 Xbox1 PS3 slim Panny BD 220
Denon X4000 and Emotiva UPA7 for 9.2
Klipsch F3 FL/R, G-28 C, RB 51's, FW's , RS3II SBL/R, RC3II, SL/R, SLX-FH's
2 30" BF THTLP'S and SubMaximus and Inuke6000DSP