Hi Keith1961 from Mauro(1962) :)
talking about Moi mesher to obtain a good export it depend also what tools you use
let me show few example,pictures talks better than my english ;)

an egg shape obtained first with a revolve,then from solid, extracted isocurves for loft and add two points at the poles





now exporting you can see little differences between them, a better sudbivision for loft at the pole area




now a wavy surface using same extracting method:sweep and network




again little differences, better regular subdivision on the network




the egg should be done obviously using revolve but if you don't need an accurate shape,it can be done using loft because of better subdivision at the poles
it's better to export with the good foot before render ;)

M