Well, between the two, I’d probably say that the HGH build would be better for open world PvE. However, if you’re not too attached to grenades, consider swapping in Flamethrower kit instead and use something more like this:
http://gw2skills.net/editor/?vdAQFASlcThatY1VwdLQ7FL3FF9pH7zO4CGhBg4B9D5AA-T1RBABUcBAuS5HN7Pgp6P5pDAgHAgZKBJFQeKjA-w
You can maintain about 10 stacks of might just by sitting in FT kit and if you toss Elixir B before you swap to EG, you can keep up those stacks while you apply more from the EG elixirs. Because of this, you may even want to go back to healing turret since it’s easy to cap out at 25 stacks of might on this build, especially if you blast the fire field.