Thanks for the suggestions...

I think I will buy the Road Morph G, it seems to have fairly good reviews.

My current under the seat bag contains
1 tube.
3 co2 cartridges
3 Park tire tools
1 patch kit
1 Park multi wench tool
1 Air Chuck.

I think I will pick up an extra tube to carry in my jersey and another CO2 cartridge to boot.

Jerry