I don't use a bulk loader so 400ft rolls would be fine for me.

70mm I have no problem processing, I have a Nebro tank with an adjustable spiral and one of the settings is for 116 rollfilm, which happens to be the same width as 70mm.

Those Orwo films at 90USD for 400ft are a great deal, just wish there was a UK distributor, I've tried to find some but would have to order it direct from the factory. There are lots of image samples around the net and it looks like really nice film.