The only reason is that it can not stream mms.I can understand that by time they made vu+duo, streaming via enigma2 boxes was not popular .But by the time they manufacture VU+duo was streaming function popular.If you are living in somewhere where it is not possible to receive signals from certain satellite, you can watch your favorite channel via streaming function.i contacted Vuplus company , they told me it is hardware issue , and the function can not be add in future.VU+DUO should be future box.i think they would think about such function , which is avialable on cheaper and much worser than vu+duo.Me and my friends who want to upgrade vuduo are disapointed.