It depends.
disk launchers: for example disk launchers are good for both close to mid rang, not so good for long range, however with the right implants they can be used to cause damage to enemies which are in cover by hitting the ground next to them.
Draw back is that you can hit the ground next to the enemy if they are too close when in cover, and you'll be targeted more by players from what i've seen.
(side note: not good for using together with other weapons in my opinion, hoever on its own it can be perfect for crowd control.
pod guns: these are perfect for long and mid rang, especially if your good at aiming. Having a long rang weapon like this and maybe some good aim allows you to stay safe and hurt even snipers alongside large groups of enemies at spawn/capture points. they also tend to lock onto targets a lot better in a way that is less annoying compared to disk launchers if you know how to aim at the enemy (in my opinion and fro mmy experience)
Draw back is that if the enemy is in cover somewhere between mid or close rang you might have problems hitting them, the projectiles at times might also go for the wrong target. Another draw back is the fact that it takes time before the projectile detonates.
(side note: matches very well with the other barrage weapons such as the cryo grenade launcher, it can lso be useful together with some guided weapons so you can really pin targets int oa specific location, it can also be good with mortars if you like to stay far away.