The brand wars are mostly an amateur thing.. once you decide on a brand if you're really serious and especially if you're running a business you don't jump brands over little differences in sensor performance because it's too much financial churn and you lose your muscle memory switching to a camera with a different control layout.
But it really sucks if your gear goes down and it's hard to get it serviced.
Canon's service is fast, excellent, and much more affordable than replacement.