Your question is pretty vague, so hard to say much unfortunatly.
Do you want a cheaper end suit you'll only wear on rare occasions? Or do you want to invest in a higher quality suit? Do you want it to be more conservative or dandy looking? Have you considered either suit seperates, or pairing a blazer with jeans or chinos? Whats the weather/temperature going to be? weather and temperature will determine what material or construction method the suit should be made off.
Without mentioning the above, its difficult to recommend anything im afraid.