[Vwdiesel] Diesel nozzles which to buy?

[mark shepherd]

Greetings folks.

193's v  293's Genuine early French made Bosch new 'old stock'. I have a choice of these, for a set of 4 shipped to the UK for about $70. 

1.5's against 1.6TD's.  Which would be better economy wise for my Quantum TD?

I can't help feeling that the 293's were possibly a compromise  for noise reduction over economy. It's just a hunch. 

Any oppinions would be welcome.
Also any better offers ;o)

Mark