The TP-Link TD-W9970 is availble new, a lot cheaper than drayteks and can be set to modem only mode.
https://www.tp-link.com/uk/support/faq/1332/

You will probably find that the HG612 works fine, I know they are old but I have used one on FTTC for years with no problems. A plus for the HG612 is that with unlocked firmware you can access it to see full line stats. (info on Kitz website) I do have a spare and also a Zyxel VMG8924-B10A which can be used in bridge mode.

I would not consider the Draytek Vigor modems, they are expensive and I don't believe they have the Broadcom modem chipset, which the HG612 has and is generally considered to be better on most FTTC lines.

The TP-Link TD-W9970 has various versions and the latest ones do not have Broadcom chipsets.

In reply to a post by Realalemadrid:

A plus for the HG612 is that with unlocked firmware you can access it to see full line stats. (info on Kitz website)

Thanks for the info. I've managed to dig out the old HG612, it was only used briefly with an Apple Airport until the ISP modem arrived.

In reply to a post by Realalemadrid:

I would not consider the Draytek Vigor modems, they are expensive and I don't believe they have the Broadcom modem chipset, which the HG612 has and is generally considered to be better on most FTTC lines.

Must admit the price did put me off a bit, although I've generally found Draytek kit to be reliable. On my line though the Broadcom chipset does have the edge, although to be fair there's not a lot in it.

In reply to a post by Realalemadrid:

The TP-Link TD-W9970 has various versions and the latest ones do not have Broadcom chipsets.

Never really looked at TP-Link. They've always seemed more style than substance but each to their own..... Billion were once well regarded but you don't hear much of them nowadays.

BT *Business* Hubs can be put into bridge mode and are dirt cheap on eBay for hardware that is brand new. It's not quite as neat as a Draytek modem and will consume more power, but I wouldn't want to be spending big on a VDSL2 modem this late in the service's life.

I have an ZyXel VMG1312-B10A that is going spare and could be had for a very reasonable price. Broadcom chip set and easily accessible stats via a second cable. PM me if you are interested. Been meaning to fleabay it but not quite got round to it yet!