What subjects? IMO, the light from a ring flash like the MR-14EX (I or II, there's not really much difference) is flat – great for documentary work, but doesn't lend itself to creative work (even with ratio). If you're shooting medical images, stamp collections, etc., the ring light is the way to go. If you're shooting more with a creative rather than a documentary intent, the MT-24EX twin lite is a much better choice. You can position the heads around the ring, or what many users do is mount them on brackets (I use a pair of Wimberley F-2 brackets) for complete flexibility on where you position the light in relation to the subject.