Was really happy when I found Raj Mahal some years ago -- can't feel at home without a go-to Indian place. And IIRC it used to be pretty good. Or at least I think I liked it the first time I went. Then the second time, the lamb was chewy. Then tried the buffet, and it seemed ok, but the next time I had it was disappointed. Is there a pattern emerging here?...
Perhaps the fairest way to put this is that RM seems to be consistently inconsistent over the years. I don't know if they've changed up their kitchen staff, or if they have a new owner or what -- but it's definitely NOT a go-to Indian place for me. There have been times that I've gone and been pleased with the meals I've shared with friends and family -- but unfortunately I've had just as many mediocre meals here than good ones. The buffet is generally disappointing, as many others have noted.
So, if you're really dying for Indian, and you're in the area, and it's open, I guess you could try it. Because it's here. Just don't have too high expectations, and you'll be fine. And you might catch them on a good cooking night and think I'm nuts -- good luck with it!