What's your budget? Premium, better but not the best or good enough?
tksI went with Sasquatch. Rather than lose the bike for a couple of weeks, I located a very low mileage shock, bought it for $100 and shipped it off to him. I sent it together with my specs and wants. When I replaced my stock shock with the Sasquatch unit and it was like night and day. Bike was transformed, especially with SWMBO on the back.
Already have the Adventuretech fork brace, thanks for your inputOn the two 1st gen wee's in my garage, one has a Sasquatch rear shock with sonic springs in the front, while the other has a Race-Tech front with springs and emulators, with the rear shock also done by Race-Tech (PO paid for it, thanks again!). Both setups are excellent improvements. On a limited budget, I would do Sasquatch without hesitation for the rear, with a minimum of new springs in the front, the Race-Tech emulators would be a splurge, but if you have the budget, worth it. While you're at it, a fork brace is a nice addition too.
Though your weight is not that great, the bike is still technically under-sprung for you, you should notice a difference when riding if you upgrade.
The Sasquatch / Sonic Springs setup was around $600 all in, the Race-Tech setup was around $1400 (2 years ago). These are US based numbers, YMMV.
If you just want a quick and easy upgrade, look into a fork brace, both bikes in my garage have them and they are worth their relatively low price. There are plenty of threads here and elsewhere that you can read about.