Well leo, torque means the pulling ability of the bike. as per technical specs, Heat pulls more than splendour, dont know why you felt otherwise

Passion hmm. 1990 tech, just refined. pro is its time tested, easy avlblity of parts. cons is that its outdated tech.

platina offers more power for the same mileage, or even better. one friend of mine in bombay gets 70KMPL on his platina, that is awesome...

Well for parts, bajaj is doing a good job, making sure all oparts are infact available. Platina has proved to be reliable, very little cases of failures. Furthermore, it has the narrow tank that you like...