Pretty much every recording in the past six months on my website (see sig) was into an R4 using either C4s, 391/93s, 481/83s, or some combination of those mics plus matrixed SBDs on some. Also, some were spot mic'ed, but most were a combo of stereo pair plus a spot mic or two or the SBD into a stock R4. Listen for yourself. Also, search the LMA for R4 recordings.