Howdy ya'll!

I have a pair of Sierra-2's on order now to replace my NrT towers which have moved to another room. I am debating the best combination of sub(s) for 90% music in a 2.x configuration. The big question is whether a pair of L12's will suit my needs versus an F15 or the like. Please see this diagram of the room: office layout.pdf

The audio signal "chain" will look like this:
iMac --> Schiit Modi Multibit DAC --> Schiit Asgard 2 phono/preamp --> MiniDSP 2×4 --> Low pass filter --> Rhythmik sub(s) +-> High pass filter --> Emotiva A300 --> Sierra 2

Previously I ran an Outlaw LFM-1 EX with the towers and loved it. After some moving things around the sub took up too much space in my office so I sold it.

I like my bass articulate and accurate. Digging deep is good (Burial!) but I opt for tight over deep if forced to make a choice. Best would be both of course! My budget doesn't quite allow for a pair of F12's at the moment. It's possible that may change in the future, in which case a single F12 to start with might make sense.

If you were me, what would you do?