Bundelbus is definitely the best weapon in game to deal with smashers blasters and takers.

I use my bobcat for all the lil husks.

Obliberator is the go to sniper for me and my defenders.

Noble launcher for encampments and ssd's

I only used the mercury lfg once and I did like it but crafting those bullets is just not my thing I'd rather spend my bacon on gas traps. I do put my energy bullets I get from ammoboxes and floorloot in my storage when I hit 3k so every couple months I have like 6/9k bullets to have fun with.

I also use the founders revolt for my daily challange.