Tubeless everytime as the advantage far outweigh the disadvantages. But.....you do need to keep an eye on the sealant especially in hot weather.
This is what l found in my rear tyre yesterday, which explains why it felt out of balance! The sealant (Orange Seal Endurance) was fitted 4th March this year and has covered 1951.1 miles.
View attachment 780354
I would also 100% recommend fitting Fillmore valves. Yes they are on the expensive side, but IMHO worth every penny as zero issues now with valves blocking with congeled sealant!