hey guys, I am currently running two 12" alpine R types, but a friend of mine got in a group buy from RE and had to spend a certain amount to get the proper discount blah blah blah. Anyway, he will have 2 12" RE subs in his posession that he is going to sell. Assuming each were correctly powered, which set of subs would do better? And, if the answer is the RE's, sealed or ported? thanks guys.