I like the compact size of the Humminguru, I could keep it on the bottom shelf of my rack, probably use it more frequently based on ease of use, smaller tank of fluid .....
my friend Jim whom I met here has it and likes it.
I met Charles Kirmuss at the recent audio show, his larger, 3 LPs at a time machine is appealing, I found it for a lot less money on alibaba
https://www.alibaba.com/product-detail/7-5L-350-410W-Power-Adjustable_1601011236869.html
ad says 7 at a time, but Charles says keep them spaced apart so the bubbles can get to the surfaces better, only 3 at a time.
more here
https://forum.audiogon.com/discussions/who-uses-kirmuss-restoration-system
Also recently discovered this chemical can make a positive charge in my/your cleaning mix.
https://www.amazon.com/gp/product/B0C4W8S79G/ref=ox_sc_saved_image_1?smid=A343O3SRMXM69V&psc=1

