The Verbal Tip

Oh the proverbial verbal tip (say that 5 times fast).  "This was the greatest night out we've had in years.  We are so impressed with everything and you were so attentive all evening.  Thank you so much for your service.  We have enjoyed you so much.  
What the?
  Don't tell me what a great time you had and what excellent service you received and then leave an under 15% tip.  However,  I'll take a bad tip any day then icky, angry, picky guests.  They were nice and enjoyed their night and I had a part in that.  It still makes me happy that guests walk out having just had a great dining experience so I'm not that bitter.  I look forward to having them back actually because they drink very nice wine and know how to dine.  It's a good combo and some people just don't feel tipping appropriately is necessary.  So be it.
So, give me the verbal tip.  But, tip 20% if you know you have received great service.  Just sayin'.