Ayrshire, along Scotland's south-west coast, is Robert Burns country and good, honest farming land, with a solid family-pony culture and reasonable proximity to the Glasgow market without carrying the city's prices. The coast gives some exposed grazing producing hardy types, while inland farmland offers gentler, more typical pasture.
Ayrshire has a decent local show scene around Ayr and Kilmarnock, and benefits from being close enough to Glasgow to attract buyers from the city without itself being expensive, which tends to keep the local market active and fairly priced. It is a sensible county to widen into if searching from the Glasgow conurbation and finding city-adjacent prices steep, and the coastal villages further south offer a genuinely different, quieter character again.