3speak is indeed a video platform, but one that is native HIVE and has a strong team behind them. I like the stability of the platform, and their aim to become 100% decentralised, even the content discovery side of the service (dsound and dtube dont have that approach, I even wonder if dsounds team is still active). I understand your podcasts are audio, but they can be easily converted into video by using a single picture/image, ie not make a video as in moving visuals, but simply use a single image. Last weekend had a few times, dsounds was not playing, ie I perceive dsound as a quite instable platform. Anyway, its up to you.