A lot of people will say yes, yet if you google till you are blue in the face you will not find anything negative about the Briggs other than the HP rating seems to be higher than actual.
Retrodog (poster on here) sells a veritable ton of mowers with the B&S CT engine and he has nothing but good things to say about it. A lot of ppl like to bash B&S for their previous trashy engines, but it seems like the newer CT engine may be pretty good.
From everything I have researched, the Kawasaki is more popular, but it still has its fair share of failures and problems. Their FX engines had some serious issues recently as well, so while good they are not perfect.