Went out a few Mondays ago to look at the Winter 2010 suits that had come in to the city department stores. Zac tried on a great suit - it was called the 'sweet/sharp' by our old mate Hugo Boss and he looked smokin' hot.. The slim cut, lapel style and everything else suited him really well.
I'm a firm believer that if the girl gets to buy a really nice dress for the wedding, then the boy should be able to buy a nice suit and not have to rent one that doesn't fit properly.
Besides, he will actually be able to wear his outfit again... unlike yours truly!