While I think this is sound advice, I don't think it's necessary to get too religious about it. Sure, in most situations it's better to keep the Moogs and especially the Behringers in their own cases. For me though, the DFAM works much better within the rack than right beside it. Even if I could fit some pretty cool modules into its space. And for the same reason why reorganizing the rack is such an often discussed topic. Having something just out of reach or hidden by a nest of cables makes a difference. And that difference might be worth the €£$/HP. Some day you'll either need a bigger case anyway or exit this madness... the best way to save your money is to not get into modular at all :)