Hmm. Triumph 400, GT 650, Duke 390 Gen 3 (Expensive but exciting to ride and even works for rides up to 400km), RTR310, Dominor 400 (Surprisingly had all good things with good price) are some good options from my limited knowledge. I myself am planning to buy the Duke 390 Gen 3 ( Don't really care about the Chapri name).
All of these have readily available spar parts all over India with relatively good price.
You can of course try foreign brands like Aprilla, BMW or keeway or zontes but their sapre parts are expensive and not available all over india.