The shocks shown above in #52 are not worth $450/pair. They are okay but wholesale for about 1/4 that advertised price.
With YSS, adjustable compression & rebound are found on their higher-line, ~$500-up, shocks. Like Ohlins, their product lines top-out, price-wise close to $2K. IMO, the value tops-out with their $750-850/pair shocks, beyond that price point is a waste...for these bikes. The trick is finding the low-end price point where you get a goodly percentage of the performance...following the "80/20 rule". It IS possible to get acceptable quality shocks, i.e. they'll deliver actual shock damping and control suspension motions, without bottom-out easily and not start leaking after minimal mileage. As pricing crosses the midpoint, those added dollars start buying ride quality...and plush ride quality is very difficult to achieve with a bike this small & lightweight.
I spoke with a US distributor of Hagon shocks. They seemed like good folks. The shocks were late 1960s-era Dunlop/Girling units, OE on classic British bikes. Old-school technology, quality construction...and rebuildable. One problem...they vanished from the face of the earth.
Another possibility might be sourcing a pair of used Ohlins, from a full size bike, then sourcing softer springs from Ohlins.
FYI, length is always eye-to-eye with all shocks. Spring finish is a matter of personal preference. I'm old-school, chrome & polished billet are high on my list of likes. That said, all else the same, if the budget is limited, I'd allocate the extra bucks toward function, and go with PCd springs.