it is possible to avoid by making sure the door is properly latched, but how is this done exactly? However, even then sharpend mentions that it happens even when the door is properly closed?
Thorchert is correct the doors are a non issue, I never heard of one opening if properly closed, maybe only if you think it is properly closed. However it is just a technique to get right as part of pre-flight. I personally prefer to close my passengers door from the outside and then get in.
If cost to divert and fix a minor problem is a cost issue then you are right not to choose the Cirrus, for building hours or on a tight budget choose something cheaper for just as much fun.