I'm trying to decide now... for decorations, should I keep my vitality jewels to max my health bar in MH4U, or should I go for the defense 2 jewels (the ones that doesn't take an attack -1 hit). I like having the expanded healthbar, but as I now can get the items for the Ancient Potion no problem, I can activate the health bonus at anytime for a strong monster, but with the defense boost, it would take more hits to actually wear down any health that I have. I thought about getting the Sharpener skill, but I'm more concerned on the getting hit part rather than the how many whetstones I go through in a fight as I usually have my cat partners with me to distract the monsters.
Also, for Rath Marrow... does anyone know if this is a capture-only reward, or can you get it by slaying the monster as well on low-quests?