From WoDuGo: OC's manufacturing process is so much less costly than ALGN's that ALGN could not ever be price competitive with OC. They also see that due to OC's process the quality of OC's product is superior. The fit is more precise and the way the buttons can be placed gives more control. They also say the lack of ridges in the OC product makes it more hygenic; it is reportedly also clearer.
Reality OC cheaper?-yes OC process superior?- no OC buttons more control? no OC more hygienic?- no, bacteria rule all surfaces OC no lines,clearer?- yes less visible than invisible OC-more work for DDS?-yes OC more work for staff?-yes OC proven product?,published results?- no OC worth the hassle to save $$$?-no, not for me