With the direction that the industry is moving it is worth moving into MEP. That being said, the program is terrible and out of the box capability is pretty much set up for american standards only, since your location says South Africa there will be a period of time, a long period of time that you will be customizing the program to work well for you. We have had this program since 2007, and we find we are still learning new things every day. At this time we do not utilize the program as it was meant to be used, in fact we use it essentially as if it were CAD, we do it this way to familiarize ourselves with the program.
Our biggest issue even tho we are beside the USA, is the lighting and equipment voltage, where the standard is 277/480, where we use 347/600, so we had to develop our own families for devices if we wanted to utilize the full functionality of Revit.
Also I believe that the standard receptacle voltage in South Africa is 230, that will be another item as in NA it is 120, so unless they have a special package for Europe/Africa there will be a long set up period.
Hope this info helps.