Armed with a budget like yours you have plenty of options to choose from today. My pick in this budget would be the BMW X5 or the Audi Q7, both are excellent luxury SUVs. If you don't want a luxury SUV and prefer a big saloon you could get a Jaguar XK, Merc E350, BMW 5 - series or the Audi A6.
However if you are looking at a 2 door sports coupe the best option in this price would be the recently launched Nissan 370Z.... its a car worth much more than you are actually paying for.
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Audi Q7 would be the best one. Q7 is new generation of SUV. Its precise lines are a signal of superior power outside and pure elegance inside. The luxurious interior provides superb comfort and exceptional versatility. Ex-Showroom Price: Rs. 52,00,000 to Rs. 73,01,771
Best of Luck.