You will probably find generally speaking, a dehler to be nicer than a Jeanneau since that seems to be what you have been sailing. Price point is also a bit higher when comparing equal sized boats. speed wise.....I'd give a slight edge to dehler, unless you fins say an older SF35 or 37, ie the taller mast, deeper keel version of the SO you have been sailing. Then the Jeanneau may have a slight edge.
"IF" this one you linked is a floor plan you like, like other parts about it. buy it, you will NOT go wrong with this boat brand. They do not sell as many over on this side of the pond. But they are a step or two up from a Jeanneau. BUT, we are not talking major up grade, maybe chevy vs an olds, ferd vs lincon type thing.
She drives me boat,
I drives me dinghy!