Selecting a new racing seat was a lot more complex than I had originally imagined!
Steve, thanks for all of the suggestions; I took at look at each seat that you mentioned and found many, many more on my own. Sheesh, there are a lot of seats out there.
In the end, I bought a Sparco Ergo halo seat with the removable wings in case they need to be removed for the drive to/from the track. I got a good deal on it at $695 with free shipping.
One reason for staying with Sparco is that I am hoping to be able to re-use the existing mount/slider from my Sparco Pro2000 Plus seat.
Looking at new harnesses next...
Install pic's coming over the holidays!