You have to remember, this isn't for an FZ1 so I can't get an S1000 rear shock or anything decent as a good base.
The Penske 8983 is around $820 & Lee @ Traxxion does not at all recommend the lower priced Penske 8900e as it would simply just be a 'replacement' but not an upgrade. That's $620 itself.
I could have the CBR F3 shock re-built/sprung/valved for a few hundred but that is a shock made for a linked bike. That is the lowest-cost option. What do you guys think of that option then?
Let's say all-in the F3 option would run me around $420
Ohlins with remote preload: $920
Penske 8983: $820
F3: $420
Which would you guys choose?
Cheap as I am I would probably go with option C.
In my experience most Japanese bikes outside of the race-bred sportbike classes come with marginal suspensions. My Versys certainly did. And like your 919 it had a non-linkage shock. A forum member figured out an 04-08 R1 shock could be modified to fit with a stiffer spring---50% stiffer in my case. Initially there were concerns the valving would be overwhelmed by the stiffer spring and linkage vs non-linkage design. But my results were great. It was on the plush side, sure, but that's what I wanted. The compression and rebound adjusters still provided a good range of adjustment, too. I'd imagine with a revalve it would have been as good as I could ask for.
Of course, that's not to say the Ohlins and Penske aren't worth it. I had an Ohlins on my SV650 and now have a Penske on my FZ1 and they really are fantastic. If you've never experienced aftermarket suspension you will be surprised how much of a difference it makes in ride comfort and roadholding. They totally deliver on the promises of modern, speed-sensitive, adjustable suspension design. And without the distracting misbehavior of the stock parts, you'll ride with greater confidence and focus. How much you allow that to increase your agressiveness will determine whether or not it's a safety upgrade, too.
So far I haven't been able to justify new suspension parts, though. I bought a used Penske off Craigslist. The seller claimed it came off an 04-06 R1 but it did
not mount right up to my FZ1 with Satan's adapter. I had to order different size bushings/spacers and I suspect I need a longer, stiffer spring. But I've only spent $435 on the project and the improvement is huge. The rear end is much more comfortable over rough pavement, yet simultaneously better controlled on big bumps. I have R1 forks and now they're begging for a revalve. Watch out... it's a slippery slope!
If you have the budget for it, the aftermarket shocks are definitely worth the cost. You will find very few people who regret spending the extra cash for premium suspension parts. Thus far I have gone the cheap, long-lead route. So I've saved some money, but made up the balance with my own time spent. If you're like me and enjoy the process as much as the results, I'd encourage you to go the F3 shock route. But if you'd much rather spend your time riding than wrenching, the Penske/Ohlins will ultimately be more satisfying.