Each type of flooring has its specific use and choosing one over the other should be driven by your lifestyle and needs. Solid wood should be fitted in a moisture-controlled environment. Solid wood (strip or plank effect) should be nailed down only and requires a wood sub floor. Solid wood can be glued to a variety of sub floor materials.
Engineered wood flooring consists of a multi-plied, cross-stacked backing with a real wood veneer top. Engineered wood flooring can be used on grade, above and below grade.
Engineered wood flooring is more dimensionally stable so it can be installed in areas where solid wood is not compatible due to moisture. Engineered wood (strip or plank effect) can be glued down over various sub floor. Some engineered woods (strip and plank) can be nailed down which requires a wood sub floor. Engineered wood can also be layed as a floating floor where the tongue and groove are glued together, but the floor is not anchored to the sub floor.