I need to clarify--my apologies. I measure about 135. According to Specialized system, that puts me between a 145 and a 155, depending on my riding position (more time in the hoods and upright, I should be on a 155, more time at a 45 degree angle or less, the 143 is better). I got sit bone pain on the Jett 143, but I was told by my bike shop that they stopped carrying it because too many complained it was too firm, so that may be the reason there...
I tried a Fizik Vitesse in the bike shop yesterday and WHOH--I finally found a seat that was comfy on my tush! Problem was that the Vitesse does not have a cutout, and apparently from the pain I experienced up front on the trainer (RIGHT AWAY), I need a cutout. Its a Tri seat, and was a little long for my purposes anyway, but it made me very interested in Fizik seats.
Anyway, I'm presently trying the Terry Falcon X (Terry has a great 30 day love it or return it guarantee). It measures about a 152, and when I switched from the Vitesse to the Falcon, my girly bits thanked me. It feels a little stiff near the hind end--it might be too wide, but we'll see how I do on the road. I just don't like the way it looks on my bike.
Thanks so much to you all--all your advice is fantastic! I'll keep you posted on my trials. Keep your ideas coming! I could use all the help I can get!
And, thanks for the tip on the Ariel!