Thanks a lot to both of you for the information. I ended up going with Pro-HDR, simply because it seemed to be the most popular out of the three. I'm definitely liking it so far; hope it works out.
I’m the guy who did the head-to-head comparison among them, and I own all three of HDR Fusion, True HDR, and Pro HDR.
The “advantages” of Pro HDR are that is automatically increases the saturation of pictures, and…well that’s about it. Often it over-saturates them. More importantly, it does the worst job of aligning the shots if you don’t have a tripod. And if your subject has a sharp transition from dark to light (such as a horizon, or a window, or two objects of much different brightnesses) then Pro HDR invariably “leaks” brightness, so a significant portion of the bright object is way overexposed and comes out pale, while part of the dark object is underexposed and too dark.
Also, Pro HDR takes a long time to capture and process image (not quite as long as True HDR, but pretty close.) Meanwhile HDR Fusion is extremely fast. The big drawback of HDR Fusion is that its Auto mode does a poor job of selecting exposure points, but I always use it in Manual mode so I get that much extra control over the shot, and it turns out great. And did I mention how fast it is?
As a side note, I always set my HDR apps to save the original images, so I can adjust their settings (saturation, exposure, etc.) independently, then reprocess them into HDR when each is as I want it.