There is definitely some truth to what the website says about riding their boards 3cm shorter. I would urge you NOT to get a 158 as I will guarantee you will be disappointed. Banana tech combined with magnetraction allow for an easier performing board...especially when it comes to things like initiating turns. If you are currently riding a 155 I would say go for a 152. If your worried about pow and groomers...don't be. The reverse camber compensates for the lower board height (keeping your speed) and the magnetraction helps you turn alot quicker and easier even at high speeds.