As long as you do not expect the HF sander to work as hard and as long as the Rigid, I would go for the HF. Budget is always an issue with my purchases.
The HF should handle light sanding of 1/4" material.
Not sure how it would handle 'rounded edges' though? IMO, a template should have flat edges...
I don't mind if other members disagree with my comments.
I don't profess to know everything, and I may learn something new.
"Never attribute to malice that which is adequately explained by stupidity."