Even if you've already got your heart and your budget committed to a ThinkPad, you've got a lot of choices. Lenovo currently sells over 20 ThinkPad models across 9 different lines. The laptops all have the same basic aesthetic, but vary greatly when it comes to size, price, screen quality, performance and battery life. Some even have snappier keyboards than others. So which ThinkPad is right for you? The answer depends on your priorities.