"Multi-pattern microphones with both omni, bi-directional and cardioid characteristics will always compromise the sound quality. It may be very convenient to have a 3-in-1 solution, but the drawback is reduced performance in each mode. Due to the need of a pressure gradient design, a multi pattern microphone in omni mode has many of the weaknesses of the cardioid, such as popping, handling & wind noise and a less linear off-axis sound. In fact a multi pattern microphone in the same mode can have different characteristics depending on the frequency."
http://www.dpamicrophones.com/en/Microphon...tional/cardioid vs. omnidirectional microphones
Men jag anser fortfarande att så länge du kör omni och är konsekvent med placering, nivå samt bara "litar" på det lägre registret (säg <300 Hz) så räcker den du har för att få tillräckligt med info. Givetvis så kanske din mic diffar några dB hit och dit men det spelar inte så stor roll i basen då rummet skapar så mycket värre avvikelser.