Posted 25 May 2015 - 03:30 PM
First off, ignore all the "It's OP, it's NERF" going on right now. Fact is, the game has never been more balanced than it is now. It miiight still have a bit of a ways to go, but for all intents & purposes the two techs are about equal in overall strength now.
Having said that, each have their own advantages and disadvantages. The Clans' real advantage is mobility and tonnage saving for all weapons, at the cost of increased heat. You can load way more weapons on a Clan mech than an IS mech, but if you do you will have a higher risk of overheat. I would say that the best way to get into Clans is to test the waters with a few stock mechs to get the feel for mech heat. When you've purchased your mech and are ready to modify the loadout, think carefully on whether you want continuous fire or concentrated burst fire.
I like to keep a variety of weapons on my Clan mechs rather than commit to meta. With heat as high as it's gonna be, you won't be able to alpha fire more than once without overheat, so if you split your loadout between two playstyles (ex. long-range gauss & close-range pulse lasers, or long-range lasers & close-range srms), it's almost like having two mechs in one. Perfect example is the Timber Wolf. Each of the stock loadouts excel at more than one type of scenario: Prime is a laser build w/ auxiliary LRM support for tactical use & 2xMG for heat management; A is an ER PPC sniper w/ a backup array of pulse lasers & streak-srm6 for finishing off exposed internals; C is a long range support mech w/ variety of weapons for different long range scenarios; D is an ER PPC sniper w/ a dedicated arsenal of streaks for punishing light scout mechs that get too close; S is an urban fighter w/ enough firepower to deal insane damage at close range, but it also has the jump jets to evade direct brawls and flank the enemy from the side, behind, or above.
From my personal experience, Clan mechs require much less C-bills towards optimization, after purchase, than IS mechs. You've already got the DHS, and in most cases ferro-fibrous & endo steel as well. You've also got the prized Clan XL engine which saves tonnage AND doesn't explode after one side-torso destruction, which is a big bonus. These components are all locked of course, so this does limit your options slightly. I would say, however, that you can find an optimal build for almost every scenario you can think of. Heck, you can even fit a gauss on a Kit Fox w/ tonnage to spare for enough ammo & backup weapons to excel at guerrilla sniping. That's something you just can't do with IS lights (well, you might, but it would be downright stupid).