Gilly,
It depends somewhat on whether or not you are flying for competition or for entertainment. In my area (Central Michigan, USA), most of us use APC props. They seem to be a little stiffer and possibly more "accurate". I have used plenty of MA props in my days. But, most of my experience with them has been with smaller planes. (.60 and smaller). I have a couple big MA props that I am going to try on my Goldberg Sukhoi this summer. I will be comparing them with APC's also. I have not brought myself [or my budget] to spending $50 or more on props yet! So, if you have MA props available, I would give them a try. They are economical and they may be satisfactory for your needs!

I hope I have helped, Scott.