An old debate. Flat-fronts and uncuffed leg bottoms seem to have established themselves as acceptable in the formal world. Here's my take: pleats and cuffs are the classic look, and acceptable anywhere and on any suit. Flat front and cuffless trousers, though trendy contemporary now, look worse on overweight people than pleats. And they may not be as acceptable everywhere. I'm young (21) and can get away with wearing flat-front pants, but in some circles, it may be frowned upon. If I had to have only one pair of trousers, I'd go with cuffs and pleats.