i think i somewhere read that if i have a very slow miner pps would be better is this true?
i cant remember where i read it so i cant re-read the source
From a statistical point of view, there are no miners suited to either method. The deciding factor is how much risk you're willing to take. For example, if you were CPU mining with proportional, and your pool found a block quicker than usual, you would have made much more money. But it could go the other way around, the pool takes longer than usual, you would lose money.
By using pay-per-share, you're essentially selling your work at a fixed price, so your payout is the same, and there is no risk for you. However, since the risk is transferred from you to the pool owner, he will want some compensation for accepting those risks, hence the high fee.
It's all risk vs. reward.