First thing that came to mind as well. Thumbs up, obviously. Although... Truly scrubby and crazy people skip fitness entirely!

Deerber,get in here!
OT: Destroyer with AM3,screw cool downs.Just thought I'd throw that out there.
Daaaaaamn, I was late, wasn't I? XD Everyone already said everything...
Damn, a poor Drell can't even sleep nowadays... XD
Yep, it's definitely Claymore week.
IT'S ALWAYS CLAYMOAR WEEK, BABBYYYYYYYYYYYYYYYYYYYYYYY!!!!!!!!!!!!
... Formalities done, on topic. Dala Kaar, first let me commend you for opening your mind to things you have found not nice in the past, and give them a second shot. In the case of the High Lord, I can assure you, you won't be disappointed.
The kits I love it most on, the ones I would never dare separating from the High Lord, are mostly the FQE, the Batarian Adept, the Havoc, the BF3 soldier and the vorcha sentinel. You can check the builds on my N7HQ if you need. They're usually updated with what I think is the best option, at least on the kits I play most often with. These are the kits I think the High Lord fits the best on, the ones I feel showcase its power most nicely.
But, I guess most of those kits can be a bit... Weird to couple with the claymore at times, or maybe a bit hard to play in that way. Should they prove so, there are other possibilities that should be taken into consideration as "entry levels" for recent converts to the High Lord.
First, the Hsol double tap build is very solid, has a very high damage output, and punishes your mistakes a lot less thanks to the 2 shots. To get in touch with the Claymore, I think this is the perfect thing.
Then, there's pretty much any infiltrator really, for obvious reasons. GI claymore is... Lulzy at least, but other things like a SI or a HI can make it sing as well.
Other than those kits, it's a gun that by its characteristics, goes great pretty much anywhere you put it, with very few exceptions.
It goes great on weapon classes because it has many weaknesses that are usually covered, or at least helped, by weapon boosting powers (accuracy, just one clip in the mag, low RoF, etc), so these kinds of classes usually turn it into a murder machine.
But it also goes great, maybe surprisingly for some, on kits that rely on power damage a lot. This is in part because cooldowns are way overrated, and in part because it gives these kits a solution for OHKs on mooks, up to medium distance and without any aid for powers, for when you're on CD, in addition to quite a big stopping power against bosses. This is crucial for many power intensive kits to operate in the best way possible. Sure, there are many ways to achieve that in a lighter and more efficient way (arc pistol, bla bla bla), but none of those has the same style
Obviously though, it goes best on kits that either have only one true CD dependant power, or that have very low CD powers.