I live in ooty. yes it is one of the best place to be in.
coonoor you can get cheaper hotels but ooty you can get branded showrooms and good hotels like gemstone.
food price is same in both the city.
coonoor is 3 degree warmer than ooty.
best time to avoid traffic is from oct to march.
exteme cold from.dec 20 to feb 5
rain from june to sept.
you can also try kodaikanal in TN, munnar n wayanad in kerala