It's FTTC, the connections don't vary that much I find between providers as they all use Openreach to get to your home. I'm with Vodafone and up until recently there was no way I would have renewed. This was because their Connect router couldn't cope with the number of devices I connected to it, there was no way to swap it for your own and it locked down so many features that you couldn't do much to bypass it.
This has changed now and they give out credentials so you can use your own kit and the newer firmwares have opened up some features. I still think it is a vastly under powered piece of kit for a modern connected home.
Thus one can judge it on price and support on how it differentiates itself. I've had better experiences with support compared to BT. The headline price is obviously very keen but be warned there are a lot of charges that are more expensive than other ISPs if something goes wrong and it's your fault or you want to change something. Credit to
@MissChief for pointing these out in another thread:
Vodafone Connect Service & Maintenance charges
Description Charge
Missed engineer appointment charge £110.00
Amend Order (prior to install) £15.00
Late cancellation of order - any time or day after 12pm (noon) two working days before your scheduled visit
£60.00
Connection Charge ( new line provision) £60.00
Connection Charge (for Fibre only) £30.00
Fault within customer premises - first hour charge £115.00
Fault within customer premises - hourly charge (chargeable after the first hour) £52.00
Customer requested service visit - phone socket relocation £130.00
Customer requested service visit - additional phone socket relocation £65.00
Replacement Vodafone Connect router £130
Failure to return Vodafone Connect router (for cancelled orders) £130
Vodafone Connect router returned in a damaged state (other than fair wear and tear)
£55
SureSignal discount removal (for cancelled orders) £40
Special Fault Investigation £150.00
and/or + Special Fault Investigation - Internal wiring issue £35.00
and/or + Special Fault Investigation - Internal equipment issue £22.00
Transfer of account ownership £20.00
Home phone number change £25.00