I've been using ReMask for a couple of years now. I installed the upgrade and when I tried to use it, the zooming feature did not work correctly. Sent a message to Topaz several days ago and have received no response whatsoever. That is not encouraging. Also suggested that they should implement Ps like keyboard commands for zooming. They already use the spacebar for panning.
I think Re-Mask is okay but not great, depending on how picky you are and how complex your subjects are. The masks almost always need a fair amount of cleanup afterward, so make sure you check the preference to apply the mask as a layer mask on a new layer. The best masking program by far, Ultimatte Knockout, unfortunately is long gone, being run into irrelevance by Corel.