I prefer
Plus 8, because that's what Morgan call it. To my mind the Aero's are a separate model range, though the Plus 8 has almost the same underpinnings.
The "new" plus 8 is so different from the Traditional Plus 8 that I feel there needs to be something to differentiate them, which is why I tend to call it an Aero Plus 8.
Oh God! Just come back to the forum and seen this!
I'll join you with that tea Rog, before I lose the will to live.

this could go on for a long while yet! We might have to buy a bigger kettle!

Alternative suggestion: In line with the soap ads for Daz - how about calling it "The new improved Plus 8"? Is the back end wide enough for that badge?