i bought a sanderson life about 6 weeks ago, having had the same debate, picked it up new for £350 from The Bike Chain in glasgow/edinborough online, fantastic service and can’t fault the frame, it’s a fabulous ride, confident and assured
not sure about the ‘naff’ paintjob, mine seems pretty good, the welding is tidy and neat,
it’s quite long on the top tube,(i spoke to Sanderson and they said it was designed like on old Kona, long and racy) but i like that, coupled with a short stem and some f120’s it is a fab ride. nice and responsive with a bit of flex/spring in the back.
I have not ridden the pipedream scion, but that would have been my other choice as well, and it does look nice and gets good reviews,
if you live anywhere down south your welcome to try mine.
i doubt you would be disapointed if you bought either, owners of both rate them highly.
hope that helps