I live there (Grimsbury), it’s OK. Chocolate factory and Finelady’s bakery smell is more regular than the coffee place (and nicer!)
House prices are pretty reasonable compared to Oxford and even Bicester now.
Shops are a bit better than a town of it’s size, and Sainsbury’s is one of the “champagne ones” so has a bit more of a Waitrose-ie stock.
It’s a bit dull in the evenings, not a lot of nice places to eat or drink, and the town centre’s pretty dead from about 7.00 onwards.
I’ve lived in much worse places, but it’s not top of my list for excitement.