I have both OJO and VP 200. As what I have in my office, I prefer VP 200 over OJO. Easier to connect to many deaf peers. Downfall as today, OJO cannot connect to Sorenson VP with phone number. Only way to connect is using either host name or IP address.
However, on Dec 31, 2008... it will not matter what kind of videophone you have. You can connect to any brands of videophones. VP 200 to OJO using phone number.
Play with your OJO and familiar yourself with VRS. Add HOVRS.TV or CSDVRS.TV to call hearing people. Understand how videophone works first before choose which videophone to have.
FYI - OJO, VP 200, MVP are free... means it does not matter what product it is. Its all free and wont conflict each other. Well... VP 200 have way of controlling all videophone in the network of your home by how you set it up. As long you can connect with anyone with your OJO, you should be fine.