It’s been good for our clients! WYSIWYG is a required feature for many of them and I’ve found Redactor better than a lot of alternatives we’ve tried. What issues do you have?

One thing that’s helped us is making heavy use of Craft’s matrix blocks. That keeps a lot of styling and inline elements out of the WYSIWYG itself. Then we can turn off a lot of the WYSIWYG buttons/features and keep it simple.