I was looking for reliability and shooting performance, but most of all consistency. I wanted to find the platform with which I could very consistently put all my shots in the down zero zone from all distances in the matches, from odd off-balance stances (like leaning out from behind cover, cover garment getting in the way on the draw, shooting with my weak hand, etc.), and do it relatively quickly, but I was willing to give up a little speed for consistent down zero hits. There's something magical about that timer going off that has a way of scrambling one's brain.
For me, that platform is a double action revolver. I can shoot SAO, TDA, or striker fired pistols better (meaning better score at a match) when I'm at my best, but when I'm tired (like after a long difficult day at work), or I'm just not into the match and wish I was somewhere else, or am feeling under pressure, or am not entirely focused on grip/trigger/sights, or get a less than perfect grip on the draw, etc., I've found that I don't shoot semi-autos as well as I do a revolver in that condition. IDPA helped me realize that. I would've never learned that on a square range, and probably not at a training class, either.