For character modelling, others frequently prefer other modelling programs, but MED can do that as well. This, short of animating it, is one of the things I've done. I've tried animation but had weird side effects, of which I have a strange solution for, but untested. That's up to you. Conversions, again not in my realm of knowledge (I don't have any other modelling programs), often don't have problems, unless using the latest beta releases where there are compatibility issues. 6.31 has no such compatibility issues. 6.4's MED is much better in terms of features and quality, but does have a few annoyances and bugs, but they aren't easily noticed.