I upgraded to SnagIt 2018 but found that it has lost several features that made editing images easier. For example, when I now place an object (text, arrow,...) it is no longer selected so if I immediately try to edit it's properties the changes don't apply to it.
Also, several of the property fields, like font size or line width, used to have up/down arrows making for easy and quick adjustments. Now I either need to use the slider (awkward and imprecise) or type in the field and hit Enter (awkward and slow).
And the default color palette no longer includes the larger selection of standard colors that used to be there. Finding bright red is no longer easy - the default red appears to be an off-standard color.
All in all I really like the product, but some of the recent changes have made it less productive to use.