I haven't noticed any flavor differences, if that's what you're asking. Step mashing will increase your efficiency a little bit, but other than that, it's not really needed. The only time I use a step mash is when I'm using pilsner malt or lots of wheat/oats/corn/rice. I'll do a protein rest on those malts, but with today's malt quality, it's probably not necessary. The protein rest just helps to reduce chill haze. If you're not having problems with that, or you don't care... then I wouldn't bother.