Agree - it's 'horses for courses' - a good LNAV capability, especially if GPS updated, is far superior to blundering around on headings. Regrettably, much of my operation has not always had the luxury of good updates. Current operation sometimes has us doing an NDB after a 4 hour sector on IRS nav only, so even the track indications in 'map' can be quite suspect. A 2 or 3 mile map shift really spoils an NDB approach if you trust the display instead of the good old RMI needles. Then it really is back to raw data. Hence the last three companies I worked for adopted a 'worse case' SOP, I suppose....