Thanks for the suggestions. There are more options than I was aware of! They would be for my Dave Yates tourer which I am rebuilding. I have suntour XC Pro cantis with the SE rear and tektro drop bar levers. It might just be my lack of skills with setting up canti brakes, but I'm not convinced by them, at least on the workstand (bike isn't finished yet and I haven't actually test ridden them). Way back when, I had a set of cane creek direct curve V brakes, and dia compe 287V drop bar V brake levers, which were great. I sold those a long time ago though. Am considering a set of Vs instead of the cantis, but couldn't find many options. I definitely don't want cheap, nasty, BSO level stuff. But dont want fancy CNC either. Reliable, strong, easy to setup are priority. The shimano XT look like just the job, although they are nowhere near as good looking as the suntour cantis!
I will get the cantis adjusted and test them, I would like to use them if possible but so far I'm just not feeling any love for them so am keeping my options open!