Have installed both new ones.
No noticeable functionality improvements, on first blush.
Some of the presets in Silverflex are interesting.
Am pretty sure the speed of loading, closing, and making changes has improved somewhat, and maybe a lot.
Installing is a pain, at least in Windows, since their status screens do not come to the fore, but a waiting glass screen stays on top looking like it hung. Immediately after installing, got screen saying there was an important update. Ok, but it was not an update, but was a a completely new download and install.
With the new "free" photolab, once it was installed, it immediately told me my "trial" period was over.