To talk about TNT 600i its an entry level 4 cylinder most affordable super bike available in India.To get sound output like this one you will end up paying more than 10 lk if you go for any other brand.So in case of money its value for money bike.
Now about quality ..the fact is though the bike is called Italian but in reality its made in china but of-course quality looks fine.
If you expect delivery of torque when you throttle keeping in mind of the 85 bhp engine for this bike delivery of power goes above 9k to 10k revs so you need to throttle it hard if you are speed enthusiast.
with this one most advantageous is you can run at top gear even when you cruising at 40-50 k mph without any knocking from the engine where as have experienced knocking in big bike with huge bhp of 160 knocks even in low gear.
About the style its an naked bike and with the duel under seat mounted exhaust it makes awesome sound and it has road presence too.People would definitely stare at you if you ride this bike for sure.About the performance the fuel efficiency is around 15~16 kmpl in city and 18 kmpl on highway.
So overall good buy for a person who wants to have a super-bike in his garage spending reasonable amount of money.