You are all over the place. My best diagnoses is that you lack the strength to pop a stiffer deck. The Merc is the entry level deck from Flow. The Breast board you rode is a limited graphic version of the Rush, my personal favorite all mountain twin. It has carbon, the Merc doesnt.
Look into the Era, Salomon Sabotage or a Villain, Arbor Westmark, or a Yes Jackpot.
Sorry for sounding all over the place.
I thought it seemed strange that the Merc would feel more poppy than my Alibi. I'm not a very weak guy but I'm not a powerhouse either so you could be right. I haven't ridden many different boards so I don't have a good feeling for their differences.
Thanks for the input. It's nice to know what the Breast Board Ever is similar to.
I'll probably stick with Flow at this point since that's all that has been available for me to try.
For the Era, what size should I go for? I'm 5'10" 175. The Merc I rode was a 155.