I just picked up a DC lvl 3 15 and I havent decided to either build or buy pre fab. I saw one on ebay for like 55 shipped. All mdf 3.40 cubed. Ive always built my boxes and I am strapped for time now a days. I got abt 1500rms that will be turned down to push da lvl 3. Any advice on which way to go with the build or buy?