Another product that looks very promising is Fluid Mask 3. It's a bit expensive, but SEEMS well worth it.
I'll look into all the above suggestions more in depth before I make any leaps, though.
I'll be doing a bit of hair masking, so I'm looking for an easy workflow for that.
You might also want to check out lynda.com for their tutorials -- they have a whole series and their monthly prices are quite reasonable (and there are a number of tutorials that you can view without paying). I have found them quite helpful for a number of areas including the ones on Photoshop. http://www.lynda.com
I LOVE Lynda.com. They're awesome!
But for hair masking, I've been finding it's a real bugger unless all the stars align, so I was looking for "other tools."
I just watched the demo on Mask Pro 4. Looks very cool.
I'm lazy and poor. I was hoping for one tool that was the Be All, End All, but I guess that was unrealistic. Looks like it's a darn good idea to have multiple tools in the ol' tool belt.