Tint or Canvas Blinds?
Personally, depending on Budget, I would go both.
Tint will definitely keep a lot of heat out of a house, and the glare. But alone will not do the job. Putting up both will not only keep the house a lot lot cooler, but also protect the window coverings from fading.
The advantage of tint is people find it harder to see in during the day, but at night the opposite! So keep the blinds closed!
I found this on the Bunnings website, where they say 900mm x 2100mm is about $22
and the info below:
Static cling film which is easier to install than adhesive backed film
Can be removed in seconds and reapplied multiple times over several years
Rejects about 65% of summer heat to keep house cooler and reduce energy costs
98% UV block helps reduce furnishing fading and shields against eye damage from the sun
Provides reasonable daytime privacy from prying neighbours
I hope this helps!