To each his own.
I personally did not like the L7s. I owned the two 12L7s. I tried different boxes, ported and sealed. The SQ on them was awful. I needed to adjust my EQ and lower the volume on my H/U for them to blend in with my sound stage. Even with that, I had an issue with their "boominess".
They may have won awards, that is great and all. But, I could only imagine how much fine tuning there was involved with these subs for them to sound decent. I also wonder what competition these vehicles had.
The L7s get pretty loud. But as far as SQ and their overall results, they were just not my cup of tea.