Dirtydingo Just FYI about the Solace and the Solace Pro. The build quality and software for them is nowhere near the quality of the Handy by a fair margin.
That being said, the Solace Pro is much better than the original Solace in almost every respect. My original Solace died within a month or so, and I wasn't able to go through the warranty replacement process due to life getting in the way.
I also couldn't use it much as it is incredibly loud. The Pro is much quieter, but takes some time getting used to it I found.
The Handy has amazing build quality, and is not battery powered but AC powered, which I think all of the devices should be. AC power (maybe with optional battery) makes the device much more powerful (and can maintain that power for as long as necessary), and removes the possibility of the battery dying at an inconvenient time (takes me forever, which is frustrating). My chief complaint of The Handy is it's a little unnatural and awkward to use, not very ergonomic and my main problem is getting the sleeves to stay in place. It can be frustrating and tricky.
Any of Kiiroo products also have great build quality and are fairly quiet. They have a price range that makes affordability easier. All are battery powered but are fairly powerful and last reasonably long on a charge. The selection of different types and styles of devices they offer is impressive.