I just ordered an dreamcast on eBay and eventually want to get CRT monitor to try out the VGA as well as I have an OSSC which has VGA inputs.
Was originally thinking of getting the official VGA box until I saw the compassion video of the crushing black.
Been happy using a no-name “DC VGA Box” with different CRT displays (CVBS/S-Video/RGBs/RGBHV), and OSSC. Was easy enough to add a 15/31kHz switch. Haven’t noticed any problems with the image, crushed blacks or otherwise.