From my experience the slightly higher "time on target" of the omni more than makes up for the ~5% you lose vs. the potentially optimal weapon [mods] of another standard beam array.
Keep in mind that the crafted omnis have the same base dps as any array; you only lose out slightly on the mods (which is a very small loss if you run the math...we're talking 300/400dps on an 80K build).
Keep in mind that the crafted omnis have the same base dps as any array; you only lose out slightly on the mods (which is a very small loss if you run the math...we're talking 300/400dps on an 80K build).