If you are getting 16 Meg sync and are only mostly doing browsing and emails Fibre will be a waste of money for you. Only if you might need an upload fater than 1 Meg would it be worth considering Fibre. I'm still on 20 Meg ADSL as fibre will give me nowt but greater expense.
Fibre need to connected to master socket.
What does BT Broadband Availability Checker
say for your phone no.? Obscure you phone no. & don't bother with all the text below the table.
Please post your full router stats. For a BrightBox: login and go to Advanced Settings/ System/ ADSL Status. Also post 'Time Connected:' from initial Status page.
Also I'd never take the landline from BT as they have an excellent voice fault system the EE cannot ever compare.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC