A couple weeks ago I posted my easy mitered border method. I had hated doing miters for just the reasons you've stated but decided there had to be a way and a way to match stripes at corners. This was my postings:
http://www.quiltingboard.com/t-159462-1.htm
http://www.quiltingboard.com/t-159494-1.htm
http://www.quiltingboard.com/t-159715-1.htm
Once I determined the method, I find that I can miter corners just as quickly and definitely with effective results ever single time. It always works. Give it a try and let me know what you think.