DS2 is taking over his sister's car, which is probably worth about £1000 (that's the asking price for similar cars on autotrader). She'd had it for 6 years so we know its history & it's a good car.
The 2 best quotes we have so far are for similar amounts (£1100-£1200) but one has an excess of £400 & one only £95
I was inclined to go for the £95 one, but then I wondered if that would mean the insurer would be more likely to write it off in case of a bump - I know bodywork repairs are expensive, so quite minor damage could require eg £1000 of repairs - the higher excess company would only have to pay £600 but the lower excess one would have to pay £900.
otoh, if they did write it off, we could still buy the damaged car back from them & have it fixed ourselves? (rather than going out & buying an unknown quantity)