Views on Voltas /Blue star ,which is best long term secular story in AC segment

Please let me know among Voltas and Blue star which looks a better buy.Please comment if there is any merit on long term investment in any of these.

 

Voltas is Better valuations than Blue star at present
both are having good dealership network across India
and Voltas having products Diversification also

 

also parts such as compressor and after sale parts for most of ac are supplied by voltas

 

I my view due to higher power saving ,future belOng to inverter ACS.Which company has more share and better technology in inverter AC

 

i think whirpool is coming out with inverter ac at low price in that range but inverter ac future will take at least 10 years to become comersially viable and compete in middle class market