darjeeling

Can any one suggest me the best route to visit Darjeeling from the plains of Siliguri? I believe there are two routs from Siliguri to reach Darjeeling, one from Pankhabari and another from Rohini. Which is suitable to follow for a tourist like me coming for the first time to the hills of Darjeeling?

I have a question. Why is different places called in miles. In Darjeeling I have heard the name of a place like, 2 mile, 3mile, 12 mile, 5 mile, 7th mile and so on. Doesn't the place have a good alternative name or the real name of the place is always in miles? I am just curious to know.