Smoking a Reserva right now because of this post
Both are good in their own way, the Reserva later in the day with some coffee (great aroma from the smoke BTW) since it has some dark chocolate notes in the beginning, and the Natural whenever (I find it to be less spicy and more sugary sweet).
Either way from what I understand they are a 1 run deal and came out in 2009 (I think) with that they just keep getting better, and so does the price