TripAdviser usually includes QF Hotels in the list of “deals” and in most cases I’ve found them to be about the same as most others and occasionally cheapest. It also pays to check that you’re comparing like for like. Not just room category but also refundable/non-refundable.
In many places, Booking.com, Expedia etc will have a greater selection, but if it’s a coin toss between two places that are much the much and ones on QF and the other isn’t, id probably still lean towards QF for the points, ease of cancellation - not to mention using $50 vouchers (or the AMEX cash back - that came in handy booking two Yellowstone lodges!).
I personally see what’s available to book direct thru the usual chains that have or want status with: Hilton, IHG, Accor etc. If nothing suitable, start working my way through TripAdviser and hotel booking sites - I’ll check QF and compare.
