“The grass on the other side of the hill may well be greener, but you should always check that there isn't something with teeth and claws crouching in it.”
“The grass isn't always greener on the other side it's greener where you water it”
“The grass is always greener on the other side.”
“Grass isn't greener on the other side of the fence ... it's just a different kind of grass.”
“The grass may be greener on the other side, but will the sky be as blue?”
“The grass may be greener on the other side, but you still have to move the lawn.”