Thanks to Phantaminum, I was able to compare the Lawton pads to the ZMF Ori and J-money pads just now. So what follows is my comparison of the three pads.
1. PHYSICAL DIFFERENCES:
First off pictures of the 3 pads (for all pictures Ori is on left, J-money middle, and Lawton on the right):
Both the J-money and Lawton have some kind of stiff ring of material in the base, the Ori doesn't have a ring of material in its base. I weighed the pads on a 50g capable jewlers/powder scale I have and they measured as follows:
ZMF Ori = 19.7g
J-money = 27.4g
Lawton = 17.3g
In the hand you can tell the J-money has some extra heft to it compared to the other two. All are lambskin pads, though the mounting flap on the J-money is pleather coated fabric (which I've peeled off from the visible areas since it was flaking off after many years of use on my Denon AH-D2000.) The Ori is the softest, most squishy pad with a fairly thin and fine-mesh transparent fabric backing. The J-money is next softest, but is much closer to the Lawton than Ori. The J-money also has the thickest and least transparent fabric backing of the three. The Lawton is the stiffest, too stiff to me, and has the most transparent backing fabric, with a larger mesh than the Ori. It was also rediculously difficult to put the mounting ring on compared to the other 2, such stiff flap material!
2. FIT ON A TH-X00:
As for comfort, my ranking is as follows (from most to least comfortable):
ZMF Ori -> (little gap) ->J-money -> (big gap) -> Lawton
Well, no surprise that softest, squishiest leather pad with large ear opening feels the best. It's also the thickest so you get the best clamp with it. Now while the J-money has the smallest opening technically, it is shaped the most square so it fits well around my big ears even though they touch. You get a decent clamp with it and the leather is soft enough to feel very nice to wear. Now as for the Lawton, well it has the largest opening but the padding, for being the lightest, is the stiffest and it feels like it is not sealing too well on the head. Seriously, it fits more like they are made out of styrofoam instead of fill foam...very weird fitting pad, not in a good way either. All being leather, the comfort from the material is basically the same after being on the head for a while - initially though the ZMF Ori feel the coolest and most comfortable when first put on.
3. SOUND IMPRESSIONS:
We'll go in picture order and note that both the Ori and J-money are using my custom attenuators inside the pads, Lawton is glued shut so you can't. Also of note my TH-X00 is Lawton Tune-up Kit modded on driver frame only, no cup dampening whatsoever. My listening setup is a Windows laptop playing FLAC through Foobar2K outputing to Bifrost 4490 DAC and Gustard H10 amp.
ZMF Ori - This is the in-between pad of the bunch. It has the most balanced sound - bass with good impact and weight (not too far behind the J-moneys), mids kind of slightly recessed but with fairly good weight to them, and highs that are probably the most recessed and neutral of the bunch.
J-money - The darkest sound of the bunch yet highly detailed and extremely clear at the same time. And that SUB-BASSS! HIGHEST energy of the bunch and very detailed, with huge body and pressure feel. Acoustic/electric Bass and drum resonances and sustain comes across the best. The mids have a sweet weight and heft, and the highs are most energetic yet not overbearing. I absolutely love these pads - perfect match for the TH-X00 PH to me.
Lawton - This is an airy sounding pad with not much bass presence, much less than stock. Seems Lawton is going for a 'hear the music detail' not 'feel the music' tune. It is a very detailed and precise sounding pad, with slighty more emphasis in the mids and highs. Thing is, this is a Fostex TH-X00 PH... the reason I listen to it is for the stellar bass/sub-bass...and it's absolutely lacking with the Lawton pads. Also has the least body and weight to its sound, very thin sounding in comparison to the others. Putting an attenuator under the pad brings out the bass some, but not even to the level of an Ori without an attenuator. Would not recommend the Lawton pad at all unless you are looking to get sound more like an Audio Technica open headphone. Better yet, my modded SHP9500S with Shure 1840 pads has similar detailed sound but with more bass presence than the Lawton pads on a TH-X00...
Overall, I'm glad got to try out the Lawton pads...one more pad I can cross off the list. Not going to waste any time trying to improve them because of the fit issues they have. Much prefer the Ori's to them. But even if the Ori's sound very good, they don't have that magic sound/energy that the J-money pads have... still on the hunt for a J-money replacement.