The true red tails bcc (now bc) have by far the redest tails
Guyana , Suriname and Peruvian are generally outstanding there are other types of bc like venezuelan, Trinidad which have more burgundy colours but are still outstanding.
The problem alot of people have is that they get pretty big especially females, there are some exceptions tho, the venezuelan bc is a lot smaller than most bc, there are also locality boas with extra deep peaks.
This is my male Guyana boas tail
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