AFAIK the Enfields made in India are built the same way that they always were, except that they have been detuned for mpg rather than mph, and they have modern electrics, but the brakes have not been improved since 1962 (the last year they were made in England). The stopping distance may have been good enough for the England of 50 years ago, with much lighter traffic than it is today, and for all I know may be good enough when bumping over Indian dirt roads at a sedate pace, but for modern paved roads with modern levels of traffic, maybe not so much. As for how much they have been detuned, AFAIK you get 85-90 mph from the 500 model in 1962, but only 75 mph from one in the Indian state of tune. OTOH, attempting to go 90 mph on Indian roads would probably be suicidal, and the additional mpg matter to someone on an Indian budget. That said, when I last looked a brand new 500 would be within the OPs budget, although I have not checked recently, but it neither goes nor stops very quickly. I understand that replacing the brake linings alleviates the latter problem, and seems essential to me.