FWIW, I am using Phonak PFE with the (custom made for PFE) Complys. They are very comfortable and as Faheem said, I can use it for long hours.
But, they tend to get dirty easily. Since I am using it sparingly, they have lasted me a month now. But some of the head-fiers report that they last only a couple of weeks for regular use. In that case, over the long term, it would be uneconomical to continue paying $$$ to Comply Foams.
You can try Shure Olives though. They are much more durable, washable and should last a while.
Only if Sony had cared to sell it's hybrids size wise, that would have been another option.
This guy has it. But he wouldn't ship to India normally.