Omark, I think all of us use 25 at BOM- I always do as a frequent visitor. It is well within the performance figures and stopping has never been a problem there. If the runway was monsoon-like, I think most people would go for 30.
Back in the early 80s on the Classic, we uniquely had several incidents of flap sections falling off. Boeing came over to see why only we were suffering and questioned why we were doing standard 30 landings instead of 25 when 30 should be used for certain failures. We went over to 25 and have been there ever since. When you look at the performance table, there is very little difference. For fatigue reasons and comfort, I think 25 is the better option- it doesn't rattle as much!