The Montra Rock (& Rock1 and Rock1Plus) comes in ~17" (M) and ~19" (L) sizes, FWIK.
A friend of mine was looking to buy a bike and I finalised the Rock1Plus for him. I did_not do a detailed review of the components, but from Rakesh@RR, the sense I got is that overall, the bike is better than say a Trek3700 (which is priced at ~Rs27K, I believe). So quite a price difference. (specific components might be better in one or the other.)
I had been meaning to post on BBC asking what folks thought of the Montra rock MTBs. Does look like they are capitalising (finally!) on the high duty on imported bikes.
-{db}.