I changed my mind again
and I got this in the end
https://www.decathlon.co.uk/triban-rc-500-disc-road-bike-black-sora-id_8554410.html
A couple of months in and so far so good. I've nothing to compare it with but it goes and stops well enough for me. Comfort is fine now I'm used to it. I'm gradually getting my distances and speeds up but I'm more of a sprinter than a marathoner though so 1.5 hours is the most I'm doing atm, trying to go faster rather than further.
Still on flat pedals for now but will look at other options soon. Thanks again for all the help.