i have 2 of the older 10" sxx re subs and they bump they will be fore sale in the next day or so i am putting in 2 12 mx series 12's!!! re is not bad but i have never herd anything like sundown so i cant speak for anything i havent herd!!!!!
I decided to model the SX/x 12 in WinISD. Looks pretty bad actually. The SE/x series is the only one from RE/x series to SX/x that had any kind of decent plot for SQ (SR/x comes in second IMO). I had the 15 inch and it sounded excellent.