I've been going to Red Robin for over 10 years. They have consistently done a great job with large parties and good burgers.
I have trouble straying from my usual mushroom swiss burger, so I haven't tried many others there, but my friends have and enjoy the different combinations. They now have healthier options to the bottomless fries... Can you say bottomless broccoli?? hahah.. um. not for me. But good for my BFF that is health conscious.