I'm already with AON on the club scheme Hugo, although my insurance is a bit more pricey than yours at £700 (standard Mk1 1.8i, uprated brakes, 20,000 miles a year).

The problem is that if I get the Tuscan I will have two cars and getting any no claims on the second car (which would be the Tuscan) seems to be difficult.

Is your NSX also with AON, or with someone else ?