Thanks Mr Mac. Yes, LHR is my local and has been since 1978 when I first moved to London, I now actually live in South Bucks and (not rush hour) it's about 45 mins. LTN is my secondary and a similar time in opposite direction. This does mean that the greatest amount of my travel has been point to point.
I have used Lufty a fair amount over the years via FRA+MUC and it worked well. As I get older, I don't mind paying extra for P-to-P. That said, when I look at the options for the indirects, there is not often a big saving. Perhaps in Y but not in PE or C for obvious reasons.