There are good engines and sorry engines in all of these China made engines, as their QC is nonexistant. So whatever you decide to buy get it from a reputable dealer who offers a warranty, proven service, and parts.
Unfortunately this leaves Mecoa and any individual who resells Mecoa products out, as their warranty is a non-warranty and they have no service or parts.
I find there are enough problems in this world without going out and laying down your hard earned cash for another one