Unless you're talking about a tuxedo (e.g., dinner suit / evening suit / semi-formal suit, to use technically correct sartorial terminology) the combination of peaked lapels and black cloth should be avoided like the plague . . . unless you want to look like the help.
Traditionally, such suits were the "uniform" domestic staff; in modern times, black suits -- peak lapel or otherwise -- remain the dominion of the service industry. Don't believe me? Here's a little exercise to illustrate my point; imagine typical looking individuals in the following professions:
- Limo driver,
- Hotel concierge,
- Bank teller,
- Doorman at night club,
- casino security,
Do not all of those individuals wear black suits?