I have never tried anything other then Oxbow as I am located in Australia so the other brands are not sold here (even then due to price reasons and the difficulty of getting my vets to order it in every time I need it, as that is the only source I have found for it, I instead have my guinea pigs on a pellet free diet). However I have heard, and looking at the ingredients I agree, that the Mazuri Timothy pellets are an acceptable pellet. They are probably around on par with Oxbow pellets, perhaps maybe a touch behind oxbow, but KMS is definitely better then both (but I can understand with you being located in Canada KMS's shipping being a big factor).