They're both good and dependable, in my experience. Perhaps I've been out of the loop, but I have not heard of any more QC complaints RE Ontario than CS. Ontario makes decent, reliable blades out of 1095, and is perhaps the only company that turns out good knives that beat CS at the price game. (Possibly Camillus too, but I haven't used them.)
Jeff Randall has often sung the praises of Ontario's standard issue 18" machete. I carried the same Spec Plus Parachutist as my primary fixed for several years -- backpacking, even diving -- without complaint. Have used the Navy Mark II and found it reliable, as well. Sturdy, small/med. fixed blades, both.
CS deserves its praise for good knives for the buck. But don't sell the Spec Plus line short!
Glen
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Thank me -- my posts make yours sound smarter.