As far as I know all the mentioned receivers can do C-Band.
You just set the LO (local oscillator) setting in the menus. eg in my Technomate TM7102 my Ku-Band is on Tuner 1 with LO settings LNB Type Universal and LNB freq 9.750 / 10.600 (ie Ku Universal Extended Band LNB) and my C-Band on Tuner 2 with LO settings LNB Type Single and LNB Freq 5.150.
But the truth is even if you get a receiver without these LO functions in the menu you just have to convert the frequency instead.
And have you checked you can receive 100.5E ? And that your Dish is big enough for the transmissions you want (see attachment below). Here are the Footprints (Flysat states their is an Asia and SouthAsia C-Band Beam but their link to the official footprint only has the following):
The Technomate has a Biss/CW table that up to 40 keys can be entered into and a CI slot so a CAM that supports Biss can also be used (eg Dragon, Diablo) and also supports CCCam and Newcamd.......