The LFM-1 will get a little deeper than the LFM-2, but if you are staying north of the 30Hz range (as is the case with most music material) LFM-2's with the SMS-1 to EQ them will probably sound better than an un-EQ'd LFM-1. I'm not so sure about the situation of that single LFM-1 has an SMS-1 as well.