Which generator should I buy?

Which generator should I buy?
Added (1). Hello guys I want to ask that I am planning to buy a generator these brands are in my mind Jasco,Loncin,Firman,Homage,Grannitto. I will only buy from these models If you knew a good generator so give me a link.
My range is 800$ to 900$. I am interested in Firman,Homage and Grannitto,Tell me which is the most reliable in all, Are grannitto generators good or should i buy Jasco, Which of these have most longest life span, I am also thinking of Elemax it has honda engine inside,Tell me now guys.

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