The ideal suit for the man wearing it depends on a number of things coming together. There is the suit's fabric, which includes its weight and color. The level of customization, number of buttons, lapel shape, etc. are additional factors.
Single Breasted vs. Double Breasted
Whether you choose to wear a single or double-breasted suit will depend on your personal style. Both options are appropriate for the majority of events, while the double-breasted suit may appear more formal.