1978 I had that exact bike bought brand new £800 over 3 years. Unbelievable 0-60 pace if you could keep the front end down! Was never shown up by much bigger bikes unless on motorway into a headwind.
I bought one of these "Brand New" back in April 1979 but mine was a blue colour which I preferred. Like you say, it was fast, but the front brake squealed when applied. And, after only around a 1000 miles, the engine developed piston slap. I had previously owned a CB250T Dream, which seemed sophisticated compared to the much smaller, and lighter X7. I only kept the X7 for around 6 months in search for another Honda Dream, but by then they had brought out the 250 SuperDream, so I bought one in red. Lovely bike, felt like a big bike, compared to the X7. If speed is your thing buy an X7. But for me, I would rather have the Honda any day.
I had one of these brand new from the showroom in 1979. I think it went for about £750 retail. Had three over the years before passing my test and getting my Z1000-H Fastest 250 available until the Yamaha RD 250 came out. Really easy to work on. I tuned the nuts out of it. Boysen Reeds, K&Ns, Micron expansion pipes, and some judicious porting as per a magazine article I was following (Motorcycle Mechanics, I think). A real wheelie popper (often by accident). On reflection, If I could be transported back in time, I'd have had the GT250 Ram Air - I just like the look better.
btw its lovely about the wife, i had the x5 because i was and still am poor, but i had and still have the same wife, she might try but niether of us could head down to canvey again on one, too bloody cold and noisy plus we both have bad knees necks arms backs wrists and other things i cant remember as my memory is also buggered, god I wish it was 81 again
The reason I've looked at this vid is I saw one of these today,it passed me in the opposite direction,unfortunately I had car windows closed so I didn't have the pleasure of listening to it.