Pretty good
Generally, the surveys have a good rewards-to-effort ratio. However, I do find the rewards a bit limited. They tied up with Ticket Max, which seems to have quite a variety of vouchers. However, it's pretty out of touched as compared to other rewards provided by other surveyors (such as Grab rewards, NTUC, Amazon etc). Also Ticket Max uses physical vouchers, which is also pretty out of touch considering quite a bit of shopping is done online now...