Thanks for the link Thorn. I did read through that thread and it seems there were quite a few opinions.
And then the Koobi owners swear by the Koobi's. In comparing the Selle and the Koobi, it looks like the Selle has a wider cutout. Would you say that's an accurate assessment? I am not a visual person so it's kind of hard for me to tell by the pictures.

I've only found the Selle at Masherz and the main Selle site. So I'm guessing I would need to order from Masherz. Decisions, decisions.