International Cycling Trips: Backroads vs. Trek vs. Others?

Has anyone had any positive or negative experiences with Backroads or Trek Travel? I’m considering an international bike trip and would value any input on which company between the two (or others) is better.

Thank you.

I have not traveled with Trek Travel but have done a few trips with Backroads and am doing another one in September. I have been really happy with them, the guides are great. There is flexibility to ride more or less and what ever pace you want. The hotels/lodges we have stayed at are all first class and you won’t go hungry.