My first post too!
Receivers that work well with corotors are fairly limited. I use an Echostar AD3000IP, which is difficult to setup initially, but works well afterwards. Not only has it mechanical polarizer control, but it will automatically switch between the C and Ku lnbs when used with a 0/12v switch, useful when a satellite has both C and Ku transponders. It will also drive a 36V linear actuator and has an option for a ferrite polarizer too. It can deal with both analogue and digital signals. It has been superseded by the AD3600 and the DVR7000 which are both equally capable but also have a steep learning curve. The biggest drawback is that they don't have blindsearch capability.
The 2 things you need to be aware of with US receivers are power supply and TV format. I don't know what power supply and TV format are in Mauritius but I have experience with a Pansat 2500 imported into Europe from the US. It can work with 110 and 220v, and I have a TV which will accept both NTSC and PAL via SCART so no problems their either. There is also a PAL firmware available from the manufacturers. The receiver can do fast blindsearch and has polarizer control. Unfortunately it does not support wideband WR75 Ku lnbs which are used with corotors i.e. there is no support for 13/18V switching of bands, only 22Khz tone switching. The 0/12v switch output doesn't work either but it does have Disecq.
Another option to look at is a Manhattan ST550 PVR. It has polarizer control, blindsearch and 36v positioner, Diseqc and you can add in hard drive for recording. It also supports wideband Ku lnbs. It's not quite as sophisticated as the Echostars in automatically switching between C and Ku lnbs but will work with a bit of extra effort.
Finally, the corotors actually have 2 probes, one small Ku at the front and a larger C at the back of the feedhorn, but they are linked together and 'corotate' using the one motor.
