Thanks,
I'm maybe a bit lighter at under 80kg and also leave it in Dynamic and Auto too (although it remains great with a passenger too). The automatic preload is the only bit that I find slightly erratic... It seems to adjust itself fairly regularly, even if the load hasn't changed: I notice the height variation when I park the bike up. Luckily, for me, the damping remains perfect.
On an earlier GSA (2012 twin cam) I completely removed the ESA and fitted Touratech (made by Tractive) units; they were a great improvement.
I've also fitted a Wilbers rear unit to a similar bike, again with good results.
Both of these manual shocks had the full array of adjustments: preload, height adjust, high+low comp, rebound and correctly weighted spring. Both were beautifully made... I'd struggle to say I preferred one over the other! I'd buy either again.
I've no experience of upgrading to one of the dynamic systems though. I'd probably want to keep the original shocks intact for the future.
I guess you have to decide between a dynamic system and an old-school manually adjusted set up. As you understand suspension, I suspect you'd prefer old-school. Probably a bit less impact on the wallet too!
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