I like deep stacks. They can be a big help to a patient player. But, if players increase the bets and raises to the same % of the exsisting chip stacks, it really doesn't matter. Betting usually starts out at lower amounts and increases quickly as the blinds increase somewhat negating the benefit of large starting stacks.
If you are a very patient and disciplined player, a much better advantage to you would be tourneys that start out at smaller blinds and have longer blind durations. If players are slow, 10 minutes goes by very fast, especially if the room allows a long time for a player to act.