F15 to FV15HP for 80% music 20% movies. Good idea?

[Brannigan]

I know the grass is always greener on the other side but I have an itch to get an FV15HP for real power way down low. Love the F15 but when I hear my dads system when I come over to watch movies his dual ported 12" $600 klipsch subs almost blow the roof off. Will I lose a noticeable amount of quality in music? I use an HK990 to cross over my sierra raal towers at 50hz. Thanks!