I would agree with both of you.
But go further than the demo....
Try 8....
It's close enough to X not to matter....
And far enough away from 6.5 to be worth giving it a go.
If after trying it for some time come back here if you have any question/problems...
(and you will
)
If the guys on these forums can't help you.....(etc)
( By the way....I liked 8 anyway! )