I think this is one of those subjects that just depends on the brewer. Kind of like the old Sears good-better-best thing. If you dont think you need a meter, then dont get one. I love mine, but it was a gift. One day I plan to upgrade and regift it. As to colorphast, I found them useless. Probably wasnt using them right.
All in all, you can make great beer without a meter. But you dont know precisely what your ph is without one.