I have all the three plugins - Topaz InFocus, piccure+, FocusMagic.
For capture sharpening, FocusMagic works very well, better than Topaz InFocus in my view. I use piccure+ mostly for correcting motion-blurred images and in several cases have been astonished with the recovery. But yes, very slow (even with a souped up trashcan Mac Pro).