Suits help please

Trying to decide what we actually want before we book the fittings. OH wants to stand out and also his best man. We're also trying to cut costs so so far I have him and his bm in tailcoats with waistcoat and cravat we picked, then our two ushers in single breasted suits with ties the same colour as the cravat. The lack of waistcoat and cravat saves us money. Now what do we put the dads in? Suits with waistcoat? I think mine should stand out a bit but OH says why shouldnt his aswell. Help!