<soft fruit geek warning>
Depends on the varieties.
Glen Moy or Glen Ample is about the best raspberries you can get, unless you like your rasps properly bitter, in which case try some Glen Clova.
For strawberries with flavour, Tamella is still the bench mark, however it's a dated variety which is pretty disease prone. Symphony has pretty much the same flavour but is a slightly harder fruit.
Although you're very unlikely to find either of those in supermarkets, as they all want Elsanta for it's extended shelf life (despite the fact they have **** all flavour, and some can be used as golf ball they're that tough)
</soft fruit geek warning>