I loved my TL98Q, which I bought used via Craig's List last year, and didn't know it was possible for it to get any better...and yet, with the 2010, Juki really hit a home run. They took a fantastic machine, and somehow made it more fantastic! Here's a few of the upgrades that I've noticed that I've really appreciated thus far...
The telescoping thread stand is another great addition. There's also a nice stand (hidden by my giant cone of Aurifil) to really secure your cones to keep them from teetering when the thread is spooling off super fast, as is so often the case with this machine!
The speed limiter is possibly my favorite upgrade on the 2010. Unlike the 98, you can now control the maximum speed of the machine, so if you have a lead foot, like I do, and maybe don't want to be stitching at lightning speed, you can control that. I never FMQ on this machine at full speed, so this is a feature that I expect to be using pretty often!
I also think there's better lighting on the 2010, which is especially nice since all of my sewing these days seems to be at night!
All in all, I'm super happy with the new machine. I've done a good bit of free-motioning on it so far, plus some paper piecing and some binding-making, so I feel like I've put it through its paces, and I cannot recommend this machine enough. The level of durability and sturdiness it provides and the quality of the stitches is just fantastic. I wouldn't trade it for any other machine out there!