You mentioned 2 other companies and just researched them and their products are inferior especially in terms of duration. Both have poor web sites and one employs 3 people and the other has 2, father and son also they have a dodgy address in the UK.
One has no profit and the other claims to have "saved" the NHS $213,000, whatever that means.
Hardly competition so if that's all there is out there then happy days.
Btw, are you Darren Magee, the M.D?
ZNO Price at posting:
36.5¢ Sentiment: Buy Disclosure: Held
