soldering - Bismuth or Indium solder - how do they compare?

In my previous question I focused on lead-based solder alloys (see Best solder wire - Sn63Pb37 vs Sn60Pb40 vs ...?).

Some of you brought new exciting solder alloys to my attention. The two most promising types contain either Bismuth or Indium.

Some questions:

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  How do they compare to each other on properties like:

  
  
  
  
  • wetting of pads and pins
  
  
  • interaction with fluxes
  
  
  • joint strength - brittleness (is this directly related to the "tensile strength (PSI)" column in the table below? Please enlighten me.)
  
  
  • price
  
  
  • ...
  
  
  
  


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  How do they compare to standard solder alloys, like Sn60Pb40?

  
  


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  Any drawbacks?

  
  


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  Most of them are sold without flux core. Wouldn't that make the solder process very difficult?

  
  


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  What kind of flux should one use with Bismuth and/or Indium based solders?

  
  
  

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Note:

Perhaps the following table might be of help:

This table comes from "Indium Corporation".