I made a lot of sacrifices to hit the 3,500 haste break point, which grants our Holy Radiance spell a free fifth tick. The truth is that the extra tick wasn't free, and it came at a great cost. The question in my mind was whether or not the cost was worth the benefit, whether or not the fifth tick made up for the losses in other areas. Holy Radiance is a pretty important spell in our arsenal right now, and haste is good generally, and so I figured there was at least a chance that the fifth tick could prove valuable.
I knew I was making sacrifices to get to that haste plateau, but I had no a priori way to quantify exactly how that would affect my overall healing. I just went for it. After last week's full clear of Dragon Soul with my 3,500 haste build, I now have data to parse. I started matching encounters and parts of encounters in apples-to-apples comparisons using CompareBot to evaluate my performance. The results of my experimentation with a 3,500 haste build had me quite intrigued.