Ultrasound Machines For Home Usage

The primary objective of using an ultrasound machine is to make a penis healthy as possible with potential increase of size at a byproduct. I continue that mission. Currently I use a Bathmate HydroXtreme 9 and a complete PeniMaster Pro kit; the rod system is used 99%. On this website I have read sufficiently about ultrasound therapy. However, I am not familiar at all with ultrasound machines [not inferior or budget models if they exist] to purchase. Will the most knowledgeable explain and compare the most upper echelon / top tier / high-end prosumer ultrasound machines [makes, models, similarities, dissimilarities, et cetera]? I am quite interested to invest in a complete system. It is important to know I have always been bereft of eyesight thus anything which may rely upon and utilise touch screens or reading output on a screen to operate likely will not be feasible for me. Thanks in advance for the knowledge.