All three options will give you all the mid-bas you will ever need so I would focus on the lower bass output. I would very narrowly go for the REL sub, but it is very close between that and the Dynamo. The ML has a more sophisticated amp and more mid-bass output, but the REL has better build quality. The SB-3000 is a great sub and has better build quality than the ML and REL sub, but it just doesn't quite have as much displacement for deeper bass.