Can you explain why you say that? what have you used Oxygen brand that Isn't comparable to Pareto, what makes the Oxygen product worse? I've used both but only Testosterone/MK677/Deca from Oxygen.. so I find It hard to tell much of a difference, I'm curious.
With Pareto I've used a TON of shit though and It's always been good - Obviously going by feel with most compounds since you really never know If It's 100% legit If you don't get your specific stuff tested.. But I don't feel I've ever been let down by either.