There was one red Heat, the original; there was no re-issue. Whether it was actually part of the Triton line is a moot point. The original was a pearl.
The Threat was supposed to be its currrent re-incarnation; it did not turn out to be that. The Triple Threat was actually the closest to being a "new" Heat, based on its performance parameters.
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"We get old too fast, and too late, smart."