Need advice for best airline+miles combo
 

I have plans to go to India for a month long vacation with perhaps 2-4 day stays at Zurich, Singapore, Tokyo eachin that order.
Assuming unrestricted fare and not-very-high cost, I want some advice on the route and airlines that earns me maximum miles?

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Guptaji

the best deal in eco is the newly launched round-the-world ticket STARLIGHT, allowing 25'000 airmiles, 5 stopovers, in eco for, no upgrades possible, you earn miles. I think it costs less then 1'900 US$ if you buy it in the US.

Airlines (for combining): Air Canada, United, Thai, Scandinavian SAS, Lufthansa, Varig, Air New Zealand, Ansett Australia, Singapore Airlines.

If you travel in late 2000 other carriers might be included (Austrian, Lauda, Mexicana).

mangup, much depends on which programs in which you already have accumulated miles ("orphaned" miles with airlines you don't expect to travel on much in the future aren't as valuable as miles on airlines you do expect to travel on a lot) and in which you might already elite status (for those sometimes significant elite bonuses). Also, Star Alliance and oneworld have been running promotions involving traveling on as many of the partners in each alliance as you can, but not having looked at the fine print myself, I don't know when these promotions expire. So your affiliations are relevant not just individually, but collectively.