Quesion about Yamaha outboards

[Joker2]

I am looking to buy a motor and the guy is telling me that he does not recomend Yamaha motors because they sometimes have big electrical problems that can be expensive to fix, curious to know if this is true? also he told me that motors starting in 2001 use o-rings instead of head gaskets, he said they are very unreliable, is this true? Thanks