I bought one on a whim a while back, made a couple cuts when I first got it (it was gutless, finicky, and stiff as heck), and put it on the shelf. It was a PITA to get fuel drawing at first, and the chain brake was so sensitive as to be unusable. The bar that came with it had such a small tip, it looked like a carving bar, so I put a Pro91 bar on it instead.
Ran a couple tanks through it today alongside a 242xp and it is definitely loosening up. Chain brake was gradually behaving better, and it stared up without too much fuss and restarted warm on one pull every time. It is SO darned light, it is incredible; it made the 242 feel heavy! It did fine in 0-6" buckthorn and honeysuckle, and made its way through a few test cuts buried in dead ash. With two tanks under its belt, it is already about 2x the saw it was when it first came out of its box, so I remain hopeful that it will wake up more with a few more tanks run through it. But from a production standpoint, I spent a lot of time waiting for the saw to do its work when running the Tanaka versus the Husqvarna. This saw is better suited to homeowner trimming, or pruning, or trail work, or stuff like that.
At this point I'm not sure where this saw fits in my current lineup. The weight is really great, but I'm used to a lot more power, so I'm not sure how often I would choose to run this saw over the other small saws I own. I'm still on the fence about what to do with it, but odds are I'm probably going to sell it off. So if anyone is itching to get their hands on a Tanaka that has only seen a couple tanks through it...