Nudge
...or staff. Staff can have insane amount of charges for the echangement (I believe the most out of all types of weapons), cheaper to make, cheaper to get, "cheaper" to maintain.
The issue, well main one anyway ... twice the amount of crystals ... twice the amount of credits, twice the amount of damage taken if something catches up to you as it takes twice as long to kill due to lack of the amp's boost.
And yes, twice is rounded as I am assuming we talking 1.84 (84% amps) - 1.97 (97 % amps)
And I agree with Gidg ... recommend rifle as 1st Ranged Skill
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