I read taglines like that and my first thought is, oh, you like quality and creativity? That's unusual. The three of your competitors I've had out so far effing HATE that stuff.
If you're insistent on doing a tagline, you should do something that's memorable and sets you apart. I have a client who "delivers dazzle with dependability." That's not exactly my style, but you have to admit- it's memorable and unusual.