I’d go with a single 15” and add a second if needed. Hsu has sealed models if you need something lighter , but ported are best . 10” paradigms worst value 15 is best 12 second .
Pb1000 pro isa Good option , if you don’t listen louder . I’d probably consider an higher end model .
All the svs are kinda small except the pb16.
my sealed diy 15” sub crushes both my ported 10” subs, although the defiance is higher end then my 10”.
it’s simply more impressive for low bass, the defiance 15 or pb16 ultra are both powerful.
some people prefer one or the other brand , are you in USA ?
I’m shocked you think the smaller sub is better, you may need to do a sub crawl or something isn’t correct.