I tried on several recently. This is my opinion on a few...
I tried the Empire LTD pants. 09 I believe, they come in stars, and weird black and white designs. I'm 6'1 196, w-33 l-32-33 generally. The larges are too big... Try to get your waist in the middle of the "waist size range" that is displayed next to the size. you don't want to be on the small end. Yes some people supposedly like the pants baggy... but they won't fit as designed. You'll have to have the waist velcro completely pulled which means your waist won't even contact the waist, but only the belt strap.
The mediums fit nice, and the knee padding is thick, but only in one particular spot which is supposed to be where your kneecap is. Problem for me was this isn't the spot where my knees are when I kneel, so that great padding doesn't even get used...
The pants also didn't have a liner along the inside so you feel the raw inside of the hard stiching. Overall the pants are very nice looking and have a lot of features, but lack in the comfort department. However they stay very cool.
The JT Teams I believe are the next I tried. They feel VERY soft on the inside, and the padding, is thick, but also a softer foam than in the Empires "kneecap spot". However its all the way through to the shin so it will cover what it touches. The material outside the kneepad looks prone to tear/fray off with sliding. The pants get hot really fast too... but overall much simpler and more comfortable than the empires. The Dye c9 were nice but the knee padding was rather weak... more comparative to the eclipse distortions. A simpler pant, with less stuff attached to it than the empires. These were actually very comfortable overall, especially at the waist.
The eclipse were my least favorite. The padding was somewhat weak. I like the fact that they didn't fit as ridiculously baggy as the empires. The eclipse is definitely cut closer. But I feel like these pants are behind as far as design, as they remind me more of some of the pants I was using several years ago, shy of the looks. However they are very well ventilated.
I believe if empire would just add a liner and make the knee padding on their LTD model's kneecap cover more and lower it a bit, these would be gold.