Great reward selection on offer from these guys. They frequently email you with new survey offerings, but you need to be quick to get in there. Though I am yet to receive a reward from them I do know it takes around a month for them to change your rewards for surveys from "Pending" to applied monies in your account. They have a low payout threshold of £10 after which they claim it takes 14 days for your chosen voucher to be posted or emailed. The first survey company I have used after a recommendation from Money Saving Expert I'm really glad that I appear to have started off with the best. Hopefully it will stay that way. Highly recommended!
EDIT: Got my first Amazon voucher within 2 hours of putting in a request for it. Assuming that in store vouchers take a bit longer to turn up but impressed.
ONLY NEGATIVE SO FAR: A number of surveys fail to complete and show in your account. If you contact them you get fobbed off with a generic reply. No one ever looks into it and I'm certainly missing a couple of quid and a couple of hours worth of time! Just be careful spending half an hour doing a survey because should it go wrong you're stuffed! Which is a shame because it will only reduce the quality of the survey responses. For this reason, 4 stars!