I'm ready to upgrade basically everything in my system Lows wise. I just got a hold of a crescendo bc3500.1 and currently getting a HO alt being built for me. This is a daily driver but its the first time I'm willing to go above 2k watts and really haven't personally had experience with the brands. I'm venturing out. But at this point I am between Fi And DC audio. (any other brand suggestions would be appreciated). For the Fi, I've been looking at the Fi BL 12's. And DC Level 4 12's. I have a custom box right now at about 3.5 ^3. So its in the range for both (im running two). Anyone have experience with either brands, build times, and quality? Or is there anything else in the same field someone would recommend ?