One "real-world" advantage of playing 2/1, particularly with a first-time partner, is that when you have a 2/1 auction, there is much less confusion about which bids are forcing. In a strict interpretation of SAYC, a 2/1 bid by responder promises a rebid. Thus all of these auctions are forcing: 1♠-2x-2♠ 1♠-2x-2NT 1♠-2x-3x Many beginning or intermediate SAYC players think these bids are non-forcing, so it's not unusual to see the partnership get to the wrong level. If opener has no extra values, he must rebid something no higher than 2 of his major. Any higher rebid is forcing to game. For example, here are some ways to stop short of game: 1♠-2♣-2♥-2NT-p 1♠-2♦-2♠-2NT-p 1♠-2♦-2♠-3♦-p 1♠-2♦-2♠-2NT-3♦-p In 2/1, opener's rebid is much more intuitive, since all below-game bids are forcing. For instance if he wants to raise responder's suit he can do that regardless of his values. This leads to far fewer misunderstandings in 2/1 auctions.