Would you mind to tell me why you prefer the c-prints. (I'm biased because, for me, in an "art art" gallery environment they sell better ;-)
Yes, there's that - the art buyer's preference. Also:
- the way they hang when just the top two corners are pinned to a wall
- the total absence of any gloss differential
- the size (72" wide Lightjet)
- the fact that they look and feel like photographs used to look and feel
I'm not bothered by gamut and dmax. digital c-types have plenty of both for my work.
I like inkjet prints too. I print my portfolios on Harman FB Gloss. For that purpose (bare 16"x20" prints) the Harman paper handles better than c-types (which would kink when handled).