I know that this is a rather boring suggestion but if ED is the main reason for your purchase, why not get another X52 Pro ? In terms of ergonomics and functionality for ED, it's simply better than the X-56 and, indeed, the Warthog. There are many direct comparisons on YouTube showing this. As to the Warthog, no one will deny how impressive it looks and how well it's built. But... again, for ED, it 1) doesn't fit the space theme, 2) no twist rudder (not an issue if you're using pedals, of course, but damn convenient), 3) the thrust unit for the X-52 is both better ergonomically and easier to use with VR since you can't see all the buttons and switches, and 4) the Warthog costs much more. Anyway, it's all a matter of personal preference but it seems to me that the X52, for ED, is the best choice in terms of functionality and value for money.
I dont see the joystick, when in the Rift, visuals dont count for me, but feeling and handling does - no joystick delivers better on those points. If you have flown only once with a WH and felt the incredible build quality and the impressive precision, that allows you to stay on target like never before, there is no other option in my opinion. I own it for two weeks now - and i am finally flying a real VR spaceship, thanks to the WH and the Rift.