I've just swapped my Honda Deauville for a Burgman 400 , I want to go touring and wondered what you'd advise for soft luggage ?

Have a look at the Lomo range not expensive but have a lot of very good reviews'

https://www.lomo.co.uk/acatalog/dry-bag ... tml#SID=83

Look at the motorbike gear they do throw overs as well.