Lack of smoke in general. Some sooting issues. Build quality is very nice across the board. Nice heft to it. However, the Smokefire puts it to utter shame in terms of smoke output and flavor. No comparison. I'm worried the Woodwind will be similar, but fingers crossed it's better than the Timberline in that regard.
Maintenance of the Smokefire would be a bit more IMO, though you don't need to vacuum the Smokefire to clean it. You can brush the ash into the grease drain holes and then dump the grease pan. On the Timberline, you'd have to vacuum it out. It's easier to get inside of the cooking chamber with the Smokefire due to the parts being smaller and easier to handle, versus the large drip pan in the Timberline. The Timberline grates are also heavy stainless (very nice grates), but still a bit awkward to handle. The grease/ash mix in the Smokefire would make for a dirtier cleaning experience though, unless you always run drip pans. Much less ash circulating about in the Timberline.