The same grape is a different wine over one hundred kilometres.
The Okanagan is a north-south corridor with a temperature spread wide enough that the same grape is a different wine over one hundred kilometres.
North for Riesling
Cooler sites near Vernon and Kelowna hold acid, so the wines stay taut and age for a decade. Buy these to keep, not to open the same week.
Centre for Chardonnay
Naramata and Summerland sit at the point where ripeness and freshness are both available. Ask how much new oak was used; the good producers now say very little.
South for texture
Osoyoos and Oliver are hot enough that whites gain weight. Pinot Gris and Viognier from the south drink more like a light red in food terms.
Buying direct
Interprovincial shipping rules still vary. Check the winery's shipping page before the cart, not after.