Expert Help Required

As I said I am leaning towards either the Troels Discovery 861 or the SBA16 MTM which is slimmer,
Both would seam to give good bass sealed with a qtc of 0.7.

I dont always turn on the sub so good bass sealed without it is useful.
The sub is a Scan Speak 12 inch Disccovery 4558T00 downfiring in a sealed 52 litre cabinet.
I dont boost it much it is used to gently support the mains for music only.