I'm using CS5 and Topaz Mask at the moment and find them both lacking in the real world.
As a studio still-life shooter...I'm constantly masking the subject.
Every year I re-checkout all the stand alone masking progs....and, to date, I really cannot find one that is truly great. They all seem to have their inherent weaknesses and flaws.
To be honest, I stilll think that CS5 (manually using the pen-tool) and working at say 300% zoom level is the most accurate for complete layer/mask isolation (albeit a tad time consuming)....and also the NX2 "selection" masking tools...are great for working with very complex "subtle" edged subjects.
Please note, the NX2 masking technology doesn't create a 'true' masking layer (and at times will produce mask edge-bleed) however, it's definitely the quickest and most effective process in many instances.
For example....this flower took me approx 30 secs to mask...and drop in a "jet-black" background in NX2...using the "selection" masking tools.
http://kvincentphotography.ca/designerflorals/h3f101eb#h3f101eb
I would use the CS5 option (with pen tool) for a subject such as this becasue of the reflection image.
http://kvincentphotography.ca/stackedimages/h275ce860#h275ce860
Again, NX2 works wvery well for a project like this:
http://kvincentphotography.ca/productshots/h200870c2#h3df3553c
This kind of somewhat fiddly subject matter would take just 30-45 secs to mask using NX2 "selection" mask (+ and -)) control points
http://kvincentphotography.ca/macro/h13dee814#h13dee814
Unfortunately, there doesn't seem to be a "one size fits all" kind of solution. So different tools for different subjects.
Give me a shout IF you find that truly great stand alone masking prog...coz so far, I haven't stumbled upon it.
KEV
"It is a small gesture, but one that can be very effective - especially in a large crowd. So fart, and if you must, fart often. But always fart without apology. Fart for freedom, fart for liberty, and fart proudly" (Benjamin Franklin 'The Dream' 1751)
http://kvincentphotography.ca/stackedimages
http://kvincentphotography.ca/designerflorals
http://kvincentphotography.ca/macro