I have purchased a number of Blu-Ray sets for TV series. I noticed that they have all been 1080i. This is very frustrating as some of my playback devices do not like interlaced video. I will lose video resolution if I fix this problem. For all of my other Blu-Ray TV series, I have just ripped the proper m2ts files and called it good. Is there a good reason other than being cheap for a release to be 1080i?