Which should i choose? Melting or blasting?

Tarans. Jump in, shoot a bit, and if you see a Galahad, jump back out.

I like Orks, huge damage burst, real fast!

Agreed!

I'd say Tulu rog is another good candidate (try it on the moon map on TS, its fun), but between Orks and Tarans, I'd go tarans because tarans are 5 second reload for 8 shots (with 4 shots per shot, shot-ception), whereas Orks are 32 rockets with 23s full reload, but you can keep firing one rocket per second (more or less a second), in terms of close combat, taran rog would win vs Ork rog not only because of the reload time, but also because the moment you fire a magnum or taran, it hits the target, Orkans and other rocket type weapons have a travel time. Also Orks vs Tarans, its 300m vs 350m, you could essentially hit the enemy with tarans with 50m extra range, if the opponent has rockets, as long as you stay > 310m (for safety), you can hit without being hit. Now not saying that Orks are useless. Orkans have an AoE, so if your enemy is corner shooting, you can hit them even if they're behind cover. If your enemy has a physical shield, you can still damage them. In terms of energy shields, Orkans can drain them down then keep them down while other weapons/allies are firing at the enemy.

I've tried Ork/Tar Rog in test server. It serves me good, only if I don't wanna care too much about the next target (shielded, anciled, bring it on).

But if I wanna specialized, I still tend towards Orks Rog for its fire&forget capability.

The theory behind Orkans is that they unload fairly quickly.

The idea behind using a Rogatka is to jump in and back out as quickly as possible. So, why would you want to spend the time dancing around unloading the Tarans?

Yes the Orkans take quite awhile to fully reload but if you're playing on the move and capping beacons you will be constantly busy and not even notice the reload. Not to mention, the Orkans actually have NO reload time but once fully unloaded simply fire at a slower rate.

That said, either or is such a valid option and the Orkan vs Taran debate comes up often.
What it comes down to is luck of the draw. You can't predict what you are going to run into. One match you'll need Orkans and then the next be wishing for Tarans. That's just how it works so swap them around to whatever works for you.

It's really going to depend on what other bots you have set up. It's usually a good idea to run a mix. So if you feel like running a PlasmaDB Griff one day, then run a RogOrkan. Tomorrow swap it around. There really is no definite answer for one or the other.

Haha...
Come in for that orkan slam dunk straight down their throats!