Wider the better to allow more air volume in the tire, this will straighten your sidewalls and let you run fewer PSI in your tires which is beneficial to commuting.

I have run inner tube clinchers, tubulars and tubeless.

I am 100 percent tubeless now which is great because flats self-seal. Cyccocommute is correct in his analysis (per the norm) but I only have one bike to tend to, not 1/2 dozen like him

GOOD LUCK AND HAVE FUN