Like I said it's just based in what I've heard. I've heard the 802D, 804S, PM1, all the CM and 600 series, and I've heard the PMC DBi1. Directly comparing the DBi1 to the CM5 and PM1 I preferred the PMC for it's much cleaner and clearer mids over the CM5 and the CM5s highs were more strident. The PM1 had less bass then the PMC and to me the PMC was more musically engaging, it had a richness in it's tone I enjoyed, the PM1 imaged just slightly better but lacked that engagement of the PMC. Now the 804D might be better with rock and electronic, where the PMC better with vocals and instrumentals... I can't say for sure cause I haven't heard the OB1. I would also add perhaps finding a pair of Dynaudio S3.4s might suit what your doing also.