I bought a 80prs from him. Communication was great, shipping was fast, and I'm fairly sure he packed it better than pioneer did lol. Would never hesitate to do another transaction with him.
What amp or amps is he running to those xls? I kniw that class limits you to 3 bats single alt normal deadened and one amp per sub but couldn't find a power restriction.
Hell even a cheap set if components like the Rockford p1s or primes would be a better upgrade. Why two sets? What's your sub stage? One good set of amped components in stock location is probably more than enough and no glass work required.