DUO may fetch 10-12K more of resale - but that should not be the criterion for buying (obviously).
Savings on LPG isn't much (discussed before at post 3). Would benefit only if run/usage is substantially high. People normally think of CNG - savings point of view (subject to availability).
Performance, howsoever good, will not match with that on Petrol. LPG is said to give a power-loss of 10-15% approx. The same would, however, not matter much in normal driving conditions & style.
All in all, Petrol is better.
Honesty is not a Spare Wheel that you pull out when in trouble. It's a Steering Wheel that keeps you on the right path throughout the life's journey.
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