Hey APM I would like to contribute a little bit to this thread, This post is about the best Elemental Dual Blades + Set to them. (So there are 5 sets) Dragon, Thunder, Water, Fire and Ice
The skills that all 5 sets have are the same.
Critical Eye +3 (30% affinity)
Elemental Crits (When you crit your elemental deals 25% extra dmg)
Razor Sharpness (Your sharpness goes 50% Slower down, so one could say you had 2x sharpness)
Elemental Attack up ( This is directly 10% more elemental attack)
Specific Element up +2 (Specific as in. Dragon set is Dragon atk +2, if water, Water atk +2) this is why there are 5 sets cuz this skill changes. what does element up do? it is also 10% element dmg increase but, in mh4u +2 would increase element attack by 40, since the dmg got "balanced" to gen, I think it's either +5 or +10. so if its +10 then this skill does +10 elemental and 10% more elemental dmg.
Now for the chosen dual blades.
Before I state them you should know these things.
The dual blades required slots for having these perfect skill set, so even if you realize there is a better dual blade, it might not be better at all because it would proly lack a gem slot, which would render them useless in this combo. keep in mind those DB's are best in a combo with the sets.
Dragon - Devil Jho, one of the two great dragon DB's, the other one is sagaru they are both close, but this one takes the cake. THIS IS AN EVENT REWARD DB Hyper Devil Jho is not released yet. so keep that in mind.
Thunder - Kirin, kirin is the best thunder dual blade
Water - Mizutsune There has been a lot of close dual blades, but because of slot requirement, and the sharpness calculation etc. Mizutsune DB has proven to scale better.
Fire - Glavenus. A lot of people think "Salamander" DB is better, the difference between those two are that Glavenus has 30 more raw dmg, but 8 less fire than Salamander. otherwise, Salamander has 35% affinity but 0 sockets. Some argue that Salamander is better, but they forget, if you go Salamander, you lose a gem slot, which means your CE+3 will be CE+2. Because of that, the new difference would then be, 30 raw -8 fire vs 25% affinity. which clearly states that 30 raw is a way to huge so Salamander is a no go.
Ice - Lagombi - Lagombi DB is the best because of its sharpness + socket. there might be better ice weapons out there, but definitely not with this combo.
A lot of the sets looks similar, only the gems , charms, and kirin jacket is different, these armor, are the Highest defense value, so its best survival as well, what do I mean by highest defense value? A lot of people can find 1000 different ways to make a skill set, some might have 200 defense, some might have 500 defense. These sets I've created, NOBODY CAN make the same sets with a higher defense than mine. the other ones will either be the same, or lower.
These are PERFECT Elemental Dual Blade Sets. (Before you import, make sure you import them in a box space which is empty. I myself saved them on box 5. Equip them all once and register them as sets, then you can sort them again if you want)