I was thinking part of it might be getting a longer stroke shock, lower leverage rate, and less progression for the Tallboy genre of bike. But it doesn't look like that's going to be the case. As to the 5010, I've got the MX version and for anything less than full-blown enduro bike territory, it's the most fun bike I've ever owned. I'm not trying maximize mileage or overall speed. If you're riding a bike for fun (and you're not in the big mountains), I'll never understand why more people didn't choose MX trail bikes. Now they are disappearing. Maybe...