Hi there,
Yeah defo worth the effort to get up into the ghats, we had a great time the Nilirgi & Palani hills in the ghats. Mudumalai NP was great, we saw bears, deers, mongoose, peacocks, wild boar and a huge tusker. Although we didn't get to see any tigers,I would suggest that elephants would pose a bigger threat, people constanly warned us about elephants.
Having said that the drivers are much more likely to get you then any of the above.
Maybe the article below is of interest:
http://articles.economictimes.indiatimes.com/2015-01-20/news/58267674_1_tiger-reserve-tiger-population-tiger-numbers
Enjoy your trip, South India will be a wellcomed suprise from the North.
K
