I have to agree TESCO's offers are good but difficult to get just right.
Think about the double points system - I am annoyed with the double points rules - you have to double up in multiples of £5.00. This time I got £26.00 of vouchers but the denomimations came as 1 x 15.00 1 x 8.00 and 1 x 3.00. So to due to their complicated double up system and the lack of availability on the items I wanted I could only use the 15.00 and the 8.00 but I had to 300 points back until next time.
I cannot believe the numpties could not send 5 x 5.00 and a 1.00 - then I could have benefitted in a much better way and kept my other vouchers for use this month rather than wait until next time.
Still like every other offer on the market there are catches after all they do these offers for themselves not us!