^ Actually, I have not gotten too many Ultimate Weapons as choices, though I was hoping for some more specific answers, I've been accepting general answers as well, such as I hate fist type weapons and I love guns.

As for mechanical, I'm referring to gameplay.

Example: I like the Flametongue cause it makes getting through the annoying Ice Cavern much easier.

Geeky Example: I love the Fixed Dice because it can easily do 5k+ damage and gets around the 1/2 power limiter on the Offering, meaning I can potentially deal four strikes of 9999hp damage with it.

Mechanical as in gameplay mechanics. Hope that clears it up.