The Arizer Argo would be good for you. Great vapor and the only thing you really have to clean are the stems, and that's easy! I'm 72 and my hand are arthritic. However, I brush out my Miqro after every use and have yet to have it plug up after 2 years.
The Dynavap is ok if you like messing with torches, want to invest $130 or more for an induction heater, or are into ritual behavior. But if you just want to vape your medicine, stick with the Miqro or an Argo. You could cut a screen for the Miqro from a larger screen, I've done that for other vapes