For those who still have an open radial tire selection at their tracks and like to have the flexibility with a wider range of offsets offered with 26mm wheels, then I would consider the RIDE 24026 tire which is the same compound as the USGT Spec tire:
http://www.ebay.com/itm/RIDE-26mm-Ra...item58b0a6cbe7
I've tested various RIDE tires and they all perform identical for me on an outdoor parking lot asphalt track with medium grip... they usually last between 12-18 race days depending on how much tire sauce I use, where Paragon White has been doing well for me.