I have got the alpha pads, but I have never tried them on the TH-X00, because the stock pads fit me well, and do not bother me, apart from which, I am a sort of "don't-fix-it-if-it-ain't-broke" kind of guy... In short, I normally won't do any DIY tinkering or modding with my cans, unless I absolutely have to... Okay, I have swapped the pads on my He-6 and my He500, but that is all the modding I have ever done, (i.e. if one can call swapping pads "modding")
One of these days, I am going to summon the courage to put those alphas on the unit, and I shall report back... In short, you guys have convinced me... It is your fault