Just in case anyone is researching this topic like I was, I thought I would update the post. I ended up with a 1st generation SmallHD 5" bright monitor. It came up on Ebay for an excellent price so I decided to jump on it even though I had a few "spec" concerns (resolution, brightness, touchscreen vs buttons, 5" vs 7" etc.). First, for me, this is a game changer. Being able to see a better, brighter, larger image at multiple angles (swivels and rotates) proved to be significantly improved over what my Canon is capable of on it's own. It was quick to impress and now I can't imagine shooting without it. Surprisingly, this improvement is without the use of any of it's focusing software. I think that will take some time to fine tune the software to my style and to be honest, I initially found it to be distracting at best. Still, I feel it's usefulness will grow on me as my skill to interpret the "data" improves.
Regarding the specifications, I was really caught up in a few things. The brightness, resolution and size were sticking points. Was a 5" screen too small? Was the 7" screen too big? And so on. I wanted it all but my budget forced some concessions such as lower resolution in order to have a brighter monitor. The lower resolution proved to be of no consequence so I am very happy with the brighter screen choice. The 5" version is great for it's weight/battery usage and is slightly less obvious than the bigger versions. Still, I can see how easy it would be to grow out of the smaller screen and move up to a larger size.
In closing, I highly recommend these monitors for anyone that struggles with their camera's built in screen. Now, if they only made one that would work with my film cameras.....