Curt Triflex Proportional Trailer Brake Controller OK?

To close the loop on this, I played it safe and ordered the Tekonsha P3.

Still curious about Curt brake controller products, so those who have them might consider posting their experiences, good or bad, so that future readers can get a sense of how Curt's higher end brake controller models stack up against the industry standard that Tekonsha has seemed to set for years now.