This work successfully used an easy analytical method to produce comparable data referable to sensorial quality of fruits. In this study we examined the distribution of twenty-two volatile compounds for two peach accessions, Bolero and Oro A, and four of their offspring using head space solid-phase micro-extraction (HS-SPME) and GC-MS. The quantitative comparative distributions of thirteen “key volatile compounds” were elaborated to deduce the “flavour intensity” of each compound for each peach sample, also at two extreme stages (unripe and ripe). Clear differences were found between Oro A and Bolero and some trends have been evidenced considering their four offspring (for ex. total flavour intensities, hexyl-acetate trend, uniform decrease of (E)-2-hexenal). The criterion adopted permits to compare the flavours quality using “flavour intensity” data and to search for similar characteristics.