I had this problem a year ago ... choose the X, SE3X to be my contest and DX call. Tell you it's worth every penny it cost when you can go with SE3X instead of SA3BYC ...
Works nice both on CW and SSB, on SSB though I do get some comments like "nice" call ... I do get that a lot from south EU stations and wonder about their view on my country Sweden and it's blondes
Do find the comments quite amusing and just recently made a new Qsl card design. Click on the picture upper right corner to view: http://www.qrz.com/db/SE3X
Haven't decided yet if I dare to print and send them out