Old World Blues was a good DLC for EW users; the LAER is kick-ass.

I can't speak for Guns, as I only really use EW, but the DLCs have been overall pretty good to EW users. They could've been better, but they were pretty good.

This has to be a troll thread. Why? "Gun Runners' Arsenal" DLC says so.

COS is better for sneak criticals and for long range sniping, because of the silencer (the mobs won't make a bee line for you after the first bang) and the higher critical multiplier.

Gobi is a better all-purpose weapon thanks to the better rate of fire so you can shoot faster in mid to close range and you can pull off more shots in VATS because it has a lower AP cost.

IMHO the medicine stick is a better end-game weapon than the Gobi despite the lack of a scope, it's accurate enough for long range shots, does crazy damage and has a decent ROF. The only drawback is the ammo is not as readily available.