@mayoradamwest
I just assumed you hadn't made the purchase yet, so sorry for the post.
To answer your question...if one's priority in a US machine is convenience, the AD is your guy. It does a better job of cleaning than the velvet-lipped, vacuum machines and costs quite a bit as well. AD has a reputation of a limited lifetime (3-4 years). Then it isn't user serviceable.
I put together my DIY machine based on @rushton comprehensive thread and did some testing. You can find most of this (my testing) on the "Thumbs up for ultrasonic cleaning" thread.
With the AD one cannot clean the inside of it's tank easily/never completely. The rollers are nice but actually interfere with the cavitation process. There is no heating cycle. The cleaning cycle is way too short for maximum cleaning.
