John,
The GE Triton 7 is a great speaker. I really enjoyed them. The ribbon tweeter is excellent. I really liked the mids and the bass as well.
Compared to the 683S2 the Triton 7s have a slightly more distant perspective of the music. That would be the biggest difference between the two. Both speakers have excellent detail, resolution, and tone. Both create an excellent soundstage. Both are very dynamic but I would give the edge to the 683S2
I preferred the bass of the 683S2. In fact I preferred the bass of the 683S2 to any of the other speakers I demoed. The bass tone of the 683S2 is, for me, remarkable.
Bottom line is I believe both speakers are great. They offer good value and exceptional sound. It boils down to presenting the music differently from each other.
Some info that might be helpful: my room is large (26fx23fx8-11f ceiling). I'm using an Arcam FMJ A19 50watt integrated.
Hope this info helps.
Cheers,
Scott