Waisal:
Ideally an individual should get professional advice when taking out any form of personal protection insurance, it simply is not about just cost but quality and level of cover also these self execution contracts are direct sales and potentially will have an adverse impact in terms of comeback on any future complaints/compensation as no professional advice was sought at time of purchase.
The message seems to be take professional advice as you then have someone to blame when the professional advice is rubbish. Don't we just love the insurance industry!
I tend to trust my own common sense and ability to read the small print rather than salesmen but the choice is yours.