Some good futanari content can be found in JAVs and certain western productions, specifically a studio called StraplessDildo comes to mind. Those (fake) dicks straight up hose the set in (fake) cum. Suspension of disbelief needs to work on overtime, but those loads are hot.
EDIT: Oh, one thing that I think most people agree on is that futa is alright as long as they aren’t topping a man. I’ve got nothing against gays, I am just stating how most straight(?) guys usually see this thing. Me included.
I think everyone has different opinions as it is mostly tastebased. I don´t have a problem with Futanari as long as they look female, but in this case it´s more about the general design of the character.
What I don´t like that much is the ridiculousness of certain parts that seem to be pretty common especially when it comes to futacharacters. The male parts are not only big but have to be considered a deadly weapon and they ram each other with such a mechanical violence that it just looks completely unnatural. I honestly don´t know what this is about but I´ve seen this a lot so many people seem to like this specifically. When it comes to the mechanical looking fucking I´m not so sure if it´s just a lack of proper animationwork or wanted as is but oh well…
In general I would do the same as with all other videos: look into them and decide on a case by case-basis if it´s worth downloading^^