I am around 100kg (usually a little bit over
) and have 2011 Jaime 137x43. Very smooth board with good low end. Forgiving landings and comfortable ride in chop. Good in small waves. I use it in marginal to medium powered conditions, although if I had not have a smaller board for powered riding it would have been more than capable of handling nurly conditions. My only complaint is that you have to ride with quite a lot of back foot pressure.
I have not ridden X-ride so cannot comment.