I generally use Muc Off ceramic wet...just need to be sure to wipe the excess off. However in recent months I have been using Rock and Roll wet lube which is awesome. Its thin but you apply liberally then wipe the chain to within an inch of its life. Result a good 3 or 4 off road wet 10 mile rides before needing to clean....and the chain doesn't get black....just muddy! Its pricey but bloody good!
Personally by far the best chain lubricants I've used are the Rock and Roll brand
Unfortunately Chain reaction whom I used to buy from don't supply it anymore :facepalm: , the cost of the shipping and potential duty importing this from the states meant I went over to the finish line range and so far it seems very good
So far the Finish line doesn't collect debris to badly and seems to wear well between applications , its a little cheaper than the Rock and roll lubes too.
I also run a more durable cassette and chain combo during the Uk monsoon mud fest season