Originally Posted by
SleepOverGreenland
The
best invest of miles is using it for a trip
needed. It seems to be a very personal opinion to call this the best ROIM, as it may fit into your plans and may not fit into many other plans and would therefore be a very bad ROIM.

Well, you pointed the finger at a tender spot. The ROIM is often calculated by invested miles(im)/hours of connection without stop-over (h). I agree that this formula is still missing a variable of personal utility which of course can destruct any ROIM if it is not of personal use (pu) at all. So an agreement could be as follows:
ROIM = (im/h)*(pu/100)
However, I do not think that there is a nobel price for miles&maths. So no award flight to Stockholm in the near future. But if there's a ready2fly offer soon we might have a miles&maths seminar in Sweden as an follow-up course of HonRun(R).