[Butcher]

You never get less performance from a too big pump so the bigger the better, this crap about no time to pick up heat is rubbish, it's a case of moving a little heat fast or a lot of heat slow, in the end above a certain point it doesn't make much difference (i.e. move twice the heat in twice the time). The main disadvantages with a bigger pump are noise, heat generated by the pump and of course size.