If you order FTTC before the end of July the activation fee is reduced to £60+VAT. The non chargeable period starts at 8pm on the Business services. Perhaps that would better suit your needs?
We also have access to the Daisy products. I have not yet rolled this out as the Daisy product offering was not properly determined until very recently and I have some concerns.
Enta have no plans I am aware of to change the billing periods. The ways things are on the Enta network ensures a high quality of service.
I do not expect to see FTTC from C&W ever. They appear not to be able to roll out significant extensions to the ADSL network let alone engaging in the kind of wholesale upgrade programme that would be necessary to offer LLU FTTC.
In some ways Daisy are better than Enta but not in ways that matter to the end user. They have better systems in place to enable resellers to integrate service ordering and management than Enta do. Their support however is not as good as Enta's by a long way in my experience.