I had a similar question regarding plain old Blu-Ray and the rep at OPPO told me that if all I wanted to do is view Blu-Ray and not any 4K content, then I should stick with my 103 and not bother with the 203 or 205 as there wouldn't be any improvement. If you have any further doubts. give them a call as they are quite honest about their gear.
All the best,
Nonoise
All the best,
Nonoise

