Are behringer/harley benton pedals just as good as boss?
No. Even if some sound good, the Boss will be more reliable and made of better components. Noise can also often be an issue with cheaper pedals. Some cheapo Tubescreamers come very close to expensive units, I think that might be because it is just such a copied design. But many others, especially the non-overdrive pedals, can be more of an issue. I have the Harley Benton/Joyo Ultimate Overdrive which many say is a Fulltone OCD clone, but the Fulltone is a lot more transparent, flexible and less noisy.
In terms of sound & build quality for the money, I think TC Electronic's Toneprint and Digitech's Hardwire series are the best deals out there.