Having just been to C&L this past Friday, I would choose theirs with the DSPredator all inclusive kit. I had already purchased the Steeda CAI and a DSP. Although the Steeda is a nice design, the C&L fits better under the hood. I understand Sean Hyland has adapted the C&L intake pipe to the Steeda CAI, but I cannot figure out how. As I said, I went to C&L and we tried to see how it would mate up. Not a straight forward mod. It will involve some cutting of the Steeda heat shield and bracing the MAF housing/filter unit a little differently. I may consider this since the C&L intake tube is a very well designed unit, BUT the only thing I did not like is that it has a plastic heat shield. It is sturdy, but I would like to see a metal one like the Steeda. Also, the Steeda CAI mounts to the stock OEM rubber intake tube, so there is not a smooth an air flow as the C&L intake tube. I will take photos when I figure it all out.
On another note...the JLT is nothing but plastic for the most part. Not real sturdy looking to me and made of a PVC type material for the tube. Also, although the SCT X and now the SCT X II are decent pieces of tuner hardware, MY monies are on the Diablo Sport! My two cents....