JL 12" Sub Recommendations for Wetsounds Syn 2 Amp

Looking for the local experts (hopefully David) to chime in on recommendations for a 12" sub to marry up with my Syn 2 amp in a ported enclosure. Actually looking for advice on a high quality constructed box to go along with it that is no more than 15" wide so that I can fit it in the walkway of my Sanger V215 with the port and sub on the same side. Looking hard at the JL 12W6 v3...but are there better options with this amp? SQ and SPL are both important but I prefer accuracy to rattle.