The thing is not so much on what you pay - this is so variable on your age, your post code, miles driven, which NX model, vol excesses, hire car if off road etc etc etc that you could get a hundred replies and all will be different. My advice is look to see which insurers have a good reputation in the event of a claim - you may pay a bit extra but worth the piece of mind.
i am with Aviva and just renewed at end of April - big increase to over £500, but a check on the comparison website and it was towards the top but not overly so