Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of the best

I tried this one (Arize) after reading so many complaints about Ziapro which I used to love but not anymore since they changed the fomula . This works GREAT, it gives you firm erection WITHOUT side effect (Stamina RX, Original Viapro give bad side effects) . Take it between meals and give it 2 hours to kick it, you will be amazed with the resultRecommend: Arize, Vicerex, Maxidus, Libidux ...They all seem to have similar ingredients which give strong erection without side effects...Cons: Expensive ($40/ 1 pack of 10)