Since I use throw away mowers on my jobs throughout summer I can say that it does take its toll on a briggs after a while, one of my yards I mow has a embankment infront of a shed I mow It is only a 10m run or so but the motor is nearrly on its side, that along with a few extra revs has slowly killed the current motor on this particular utility.
I would use a victa 2st but I enjoy using my viking base too much.