Could someone please advise

I am looking for an Airflo 40 Plus extreme 7/8 to fish an 40 Plus line size 7 but all i can find is 6/7 and thats on Ebay

Would both these rods fish a size 7 line ok and what would the difference be

Or whether just to spend a little bit more and by the Nano

My friend has a 7/8 and i love using it and am just worried in case the 6/7 doesnt feel the same or fish the same

I hope the above makes sense

Billy