Hi Graham,
If you are looking for a 7 micron chip camera you might want to consider the Moravian G2-4000
(
https://www.myastroshop.com.au/moravian/index.htm
Moravia has released an X2 driver for TSX. I've been using it recently and it is now quite robust. I have no issues doing long automated T-Point runs. The camera has good cooling and inbuilt filters. I think you would find the price quite competitive.
Peter