Gwamma, have you tried Green & Blacks 85%?
I love the flavour and don't find it as strong as other 85% choccy, even some 75%, also, it's really low in sugar.
Just don't buy it at "health food" shops unless you like throwing money away..
Local specialist shops here in Auckland charge $6 - $7 for 100g, but in countdown/new world it's only $3.99. Countdown usually has it on sale at $2.99 at least once a month, so I just stock up then :-)
Actually, the same goes for Harmony bacon too, I only ever buy that on sale.