Hi Ian,
Congratulations on your purchase, i hope you like the NX as much as i do. I was in a similar position to yourself about 18 months ago. I had an RC, beautiful car, stunning to look at but like yourself, a bit too low to get in and out of. Lexus Cardiff did me a great deal on my first NX which was a 66 plate ex demo in sonic white. I would still have it had Cardiff not made me an offer i couldnt refuse. In fairness the new one is better in a couple of areas, so im really glad i changed. I love my NX and the Lexus brand in general. I hope you are as happy with yours as i am with mine.