I am growing E Daw, See Chompoo, Kohala, Tiger's Eye, Biew Kiew, Daigelman, a Kohala seedling that I planted and have fruited and a couple of different seedling selections from some growers in the Homestead area. Hands down, the best longan so far that I have encountered is.........well, its too close to call. You guys got it right.......See Chompoo or Biew Kiew or Keow...........these spellings will drive you nuts. On a given day I might pick one slightly over the other, but either one is much better than Kohala. E Daw is supposedly the commercial cultivar in Thailand with excellent production and storage capabilities. There are other vairieties in Thailand that are supposedly even better, but I have not tried them.
Harry