There is no answer for this question. It's like asking what my second favorite grass color is. No other color but green is acceptable, so there cannot be a second favorite color. (Keep in mind that no analogy is perfect. If you were to follow this to completion, I bet it would fall apart as well. This is as close as I could get to how it is in reality.) In the same way, I have seen that there is no other way to heaven than through Jesus' grace which He freely gives.