NEX6 and 16-50mm with or without the 55-210mm

I have the 18-55 lens and don't use it at all. For most situations it can be (in my opinion) substituted by a 24mm zeiss (high cost though) or 30mm sigma or 50mm SEL. The 55-210 however is a nice lens and pretty useful in range. And - choosing bundled kit is a lot cheaper than buying stand-alone lenses. If you won't like it - you can always sell it (and probably make some small profit).