I have 120 deg. spotting drills but use a 60 deg. center drill also. The lead end of center drills is typically 120 deg., just don't go too deep and it works like a spotting drill.
I'll spot drill if I'm worried about accuracy. If it's a quick throw-together bracket with oversized holes, I'll go right to the stubby drills. I have yet to snap off anything as small as 3/32", so must be good for not walking the bit without spotting.
Bruce