I've had my MSI Z68 GD55 since I bought my 2500k 6 years ago and from a reliability standpoint it hasn't had a single issue, so I'm still fairly positive about MSI boards. It's more the whole launch in general that has me worried, rather than any specific brand. The only problem I have found with it is a compatibility issue with newer graphics cards, so I'm still sitting here with an ancient card.
It makes waiting for Ryzen 5 even more painful; I'm thinking it will be another month before that CPU is stable, and by then it will be a bad time to buy a new graphics card with Vega right round the corner. Then there is the inevitable problems that will follow with another launch