The best thing about this program is that it's not too difficult at first but once you get used.
It has so many features especially in creating real time rendering environments which I have never heard from any other programs ever! There isn't anything really bad as well except sometimes when editing an object or scene its hard because there are lots out side things going around your camera view making everything harder than what could be expected if those weren;t even inside my area where i can see all objects clearly like how they should appear since nothing was blocking them away.