I would go with the Yamaha, as it has an active or powered subwoofer, while the Oknyo has a passive subwoofer (powered by the receiver).
Should you decide to upgrade your speakers down the road (and you likely will want to do that because the speakers on both of these systems are not that great but are a decent enough starting point), the Onkyo will make it much more difficult to find a passive subwoofer, since most subwoofers on the market are active, which will not work on that particular Onkyo receiver as far as I can tell. Passive subwoofers also rob the other speakers of power, since the receiver not only has to drive the 5 satellites, but the subwoofer as well. The Yamaha does not have that issue, since it sends a non-amplified signal to the sub and the sub's built-in amp supplies the power to drive the signal.
After further inspection, the Onkyo receiver has an active port, but the included sub is passive.Onkyo has also Active subwoofer Port...or in wrong?
Ok but in future i can buy a new kit of speakers with an Active sub that work fine with this Onkyo?It has an active port, but the included sub is passive.
Passive subwoofers also rob the other speakers of power, since the receiver not only has to drive the 5 satellites, but the subwoofer as well. The Yamaha does not have that issue out of the box, but the Onkyo will. Something to consider.