I would build a ported box for one of them, just to see how it sounds //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
They sound good, but I've never heard an L5 so I can't really compare them. The only other sub I've really listened to extensively (car audio, at least) is a 10" Powerbass, so it's a step up from that at least
The reccomended amount of air space for this sub is actually .4ft^3 btw, I'm only giving it .3ft^3 since the sub displaces about .05ft^3 or so it has slightly more potential than what I'm seeing from it anyway. I'm happy with it though.