Migrated from Xilo and gained around a meg on sync. Steady 6mb down and now 1.1mb up. May have also coincided with Openreach upgrade at exchange as I can now connect in ADSL2 mode (previously only G.dmt)
Barely worth the effort of upgrading from ADSL2 to VDSL.
BT Wholesale FTTC using Daisy 100Gb/Month and line rental. Very responsive support. I had a manual migration to Uno from TTB.
Talksurf ADSL2+ LLU. LLU is slower than my old BTw Zen connection, but the cost saving makes up for it.