The only other class Ive played to a significant degree is Revenant. PvE and power dps herald and minor dabbling in renegade.
I played the revenant because of the simplicity of it and ease of play without having to delve into lenghty guides about setup possibilities.
Having locked skills. Trailtlines devoted to each legends, instead of too much mixing and matching.
I ended prefering Herald as the Renegade rotation was painful to do right, though I found the Revenant to be quite fragile. And knowing how the Renegade spirits are so terribly fragile, it made me first look into the Scourge due to the unkillable shades, which was in the heyday of the uberscourge. Which soon got steadilly amputated till its a shadow of itself.
But I am currently playing Reaper, which is doing a far bit better than dps scourges. A pity really that Scourges got nerbatted this hard in pve even.