Today (June 16, 2012), my mother-In-law operated for Angiography in Jupiter Hospital, Thane. And I have only 3-4 words to say about this hospital: "simply superb experience" and "anytime better than Fortis". They have done correct diagnosis.
Hospital staff adhere to time and I felt they are not money minded people like other big hospitals meaning they will not ask you to do any unnecessary test/ procedures, which eat lot of buck unnecessarily.
Cleanliness is another advantage for this hospital.