How far are you going? If not driving regular long trips, then power won’t make too much difference to trip times.
Bigger engines are always nice of course, but worth your extra money? Dunno.
Will you be using local dealer or private mechanic? If latter well worth paying them to check any truck before purchase.
Plus drive it yourself, if it doesn’t suit YOU you’ll never be happy.
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Edit to add
Make sure any new body still allows access for maintenance.
Hopefully someone else will point to deal spots on DAF 45 to check