Coral Sunglows or albinos but I guess that depends on what you like really. They can be very pink as adults.
Some lines keep the reds better for the hypos I would ask to see the parents of babies you like that way you have an idea of how they will end up.
Diem Marie has some very nice and ridiculously beautiful boas when it comes to the hypos.
Brian Boas has BCC available right now from beautiful parents.
I thought this this was interesting information on the corals.
http://www.boamorph.com/id32.html