Bike berry Fzero 4 performance or Fzero 4 stroke friction drive?

[daveet6666]

I need some feedback I am gonna try this one more time. I have had nothing but bad luck with these engi es and I am a shitty mechanic but anyone know anything about these bikes should I try one and which one should I go with? Thanks appreciate any advice

 

[Sidewinder Jerry]

My preference has always been chain drive systems.