@Milpai: Hey there long time no see! I deleted my system because I went on about being "done" and just about everything changed LOL. A bit embarrassing, but I guess that's how this hobby goes. ;)
@Cfluxa: Sure thing. First things first, in full disclosure: I'm selling my Trishna here (mainly because I was contemplating a second system that may not happen now). If it doesn't sell I won't be heartbroken in the least, and will gleefuly keep it, as it's a great speaker. Anyway you were warned. ;)
Sonically, the Trishna doesn't lose much to the Maarga. They clearly are from the same sonic "family tree" (characterized by extreme coherence, presence without "edge or shout", microdynamic detail in the vocal range, and speed). The key differentiator, as you'd expect, is in the lower octaves (because of different cabinet size), particularly in larger spaces. The Maarga goes down to the mid 20hz range, whereas the Trishna will go down to the mid 30hz range. Whether this matters to you will depend on the program material you listen to primarily. In terms of midrange body, there is a slight advantage in the Maarga, although it could be argued that the Trishna does high frequencies a little more justice (again, as a matter of physics...give and take).
I think the Maarga would simply overwhelm your room unless always played at modest volume (the room I used the Trishna in was larger than yours; about 12x13 if I recall). The Trishna would not be far very off, but would have the advantage in this regard. The reviews don't mention it, but these speakers are very responsive to corner loading. If you back them into corners (whether by choice, or if you're short on room) you will get precipitously more bass (for better or worse). Fortunately there is a bass output attenuator which helps.
I tend to look at speakers (or any other component for that matter) as "a specific tool for a specific job". Similar to your choice, I was mentally and financially prepared for the Saadhana, but given space size for my listening area (roughly about 330 sq ft with a vaulted ceiling), the Maarga was recommended to me by Jacob as the better choice. In retrospect, I feel he was absolutely right.
Ultimately your ears will be all that matter, but in the absence of being able to listen to both, I would talk to Jacob.
Good luck on the search.