I have not listened to the Triangle. But have to the paradigm studio 100v3 and the JMLabs cobalt-s and the Electra. While I do like the Electra a lot. I'm not big fan of the cobalt, it's not as smooth or as detailed as electra 926, 936 or the paradigm studio 100v3. While the 936 is a better all around speaker then 100v3. 926 and the 100v3 are very close in performance with an edge to 926. Now 926 is over a $1200 more. Which makes the paradigm a much better value. Another speaker you might want look at is the B&W 703, very detailed and an excellent midrange.
