Well quoting Raul CB750K1 "The most sought after..... is always the most scarce, regardless of what you are looking for".
Raul, I think I have to disagree with that to some point. Even in the car world, the rarest in some cases doesn't always mean the most sought after. So, does that make the CB750A the most sought after of the 750 SOHC's? I wouldn't think so...
I have to agree with that statement. CB750A is rare but doesn't seem to be much appreciated.
This has been discussed before. I always have said how strange it seems, that being the last models the best in terms of early teething problems solved etc, the first models are always the most coveted. Common sense is that the oldest the bike, the less chances to find more of them, and therefore the more "collectable". Then, cosmetic changes are also something to have in mind. During the production run, changes in paint schemes doesn't always mean that the fashions changed that much year-to-year, but that they needed to change them in order to stimulate sales. Now, 40 years on, fashions have changed so much that the color we like more today may very well be the weirdest back in the day.
I am biased having a K1, but I think that the K1 is the best of them all. We are lucky that fragile items such as airbox and short chainguard were changed. We enjoy the luxury of having headlight shell and fork ears painted in body color, that was discontinued after the K1 in order to reduce inventory -and probably, to be able to change the body color right at the dealership in a matter of minutes, if need be. But, most of all, the bulky sidecovers of the K0 was redesigned and we enjoy a slim-fit sidecover arrangement. We enjoy the HM300 sound without the hassle of adjusting 4 separate carb cables.
I could live with some improvements brought back from the future, such as the petcock at the left side -so I can open or switch to reserve while keeping my hand on the throttle-. I think the idiot panel in the handlebar is more practical in order to replace blown bulbs, and the change in the front brake caliper mounting hardware makes it easier to fit a second disc. I also like the passenger rail, both for practical and cosmetic reasons, than the K1 handle. I could also live with a document tray under the seat and a seat lock. Never had really needed the lock, but well, you never know.