I'm posting this here for people that may stumble across this thread looking for advice. If you have the money/means to get rear suspension upgrade and are wondering if you should - everyone here was right; DO IT. I broke down and went with the Ohlins shock deal being offered by LDH, and I was finally able to get it installed last night.
My thoughts on the suspension: it doesn't make the ride any softer on the little bumps and divets, but it does soak up the large ones MUCH more effectively without the pogo effect. However, that's just a side point. The main point is that it makes the rear feel glued to the ground. I had seen other people say this, but I doubted that I would really notice it - I did. Hitting bumps while cornering was clench-worthy on the stock shock, but with the Ohlins I don't even have the slightest feeling of losing the back end. Overall, the bike just seems so much more solid on the road, and it inspires much more confidence in the bike. I absolutely love this upgrade, and I'm extremely happy that I went with it at the first chance I got. (Though I'm glad that I rode the bike on the stock unit long enough that I'm able to fully appreciate the new one.)