Recommended solo target dps energy weapon to go with the strand warlock osteo build?

[river chasm]

I'm sorry to say but energy weapons aren't meant for single target "dps", that would be your heavy. Why would you run eager edge unless you need to well skate or speedrun content?

Eager edge swords are commonly used outside of boss encounters, jumping puzzles etc

[west spade]

Snipers and fusion rifles are good

Try royal executioner

Or even the new raid shot gun