KT100 is better than KT88?

I heard someone said the sound quality and durablity of KT100 is much better than the KT88. I am using Rogue M150. Any advice?
Hey guys, thanks for the kind words, I appreciate it! And I would like to amend my statement that I am an "expert" on the KT100 (makes me sound awfully big-headed) so let's just say I'm "experienced" with KT88's and KT100's. And BTW I misspelled the name of the tube factory, it's "Liuzhou". Enjoy the music!!
Is there an easy way to tell them apart by just looking at them? David?