@prof I wrote the prior response while you were posting your admission.
Martin and you contribute better posts on ASR than the vast majority. You don't go off topic and start to talk about pizza toppings, wine, sport cars, soft drinks etc. Why do you go nuts over information someone with greater knowledge has to offer here? You'll note that you have been subject to written limitations on topics and criticized for your subjective views. I agree with those subjective opinions I've read on ASR since a month ago, seeking out "normal" members who can articulate why they choose equipment and music rather than state, its' the best, the cheapest and forget the rest.
I think my survey of reviews of the Benchmark L4 and your analysis of it and preference for the CJ speaks volumes concerning it's value and quality; however, it also indicates that despite reviewers stating there are no negatives, it is lacking in some factor that makes it less preferential. You said it was body and warmth. Same with their older DACs. However, the older DACs can be upgraded to have that 3 dimensional, full bodied and warmer sound with modification of parts. The engineering is sound as is the basic construction. I don't know if the L4 can be modified to sound "better." If it could, I bet I would like it.