Kob started off as a phenom, but Aum was the best (and at one point, the sexiest). Then Noon W. But now it's Jui. She's very tasteful in every way: superior acting, beautiful, and her lakorns are always top quality. I'd say her suckiest lakorn (though not her acting) was with Cee just because I don't really like the guy's acting (he just seems so whiny and immature), but all of her lakorns from thereon have been top on my list. I highly recommend her lakorns with Vee to anybody. They're wonderful.
Araya, Yui, Tangmo, and Benz are ok too.
No offense to anyone, but the likes of Kwan, Pinky, Rita, Amy, Vicky, and a certain others wouldn't even make it to my B-list.