If you choose the automatic version, do invest in a watch winder to keep it running when you're not wearing it. I bought my husband a J12 and didn't buy the watch winder until 9 months later. The watch gained time so I figured perhaps the winder would solve the problem. It didn't so the watch went in to be recalibrated at no charge since it was less than a year old. Now it keeps perfect time and husband uses the watch winder so it doesn't have to keep being reset.
I didn't want the hassle. I'd rather deal with a battery replacement every few years so when I purchased a J12, I chose the quartz. It's personal preference, really. Oh, and my bezel didn't move, so mine had to go in for service as well.