I have a 2007 GTI SE 155, and can’t say enough good things about it. I had to replace the dash cluster, but that has been the only issue that wasn’t user induced - and it may have been user induced with the ski turned upside down for an unknown period of time once. It is a solid machine and I recommend the older GTIs 130/155 models to everyone that asks. I change the plugs every year and oil every 100 hours and have about 230 hours I think. My buddies have Yamaha VX models, base models I think, and about year 2015. We ride 50-55 mph an hour to the Sebastian Inlet from north Melbourne, out to sea and play for an hour or 90 minutes, then back to Melbourne. Maybe ride about 150 miles total? And my low fuel warning comes on just as we get back. I sometimes have a 130 lb passenger, it doesn’t make any noticeable difference to fuel economy for me. I think my buddies have a bit more fuel left than me riding solo, but not a significant amount. I don’t think they have a low fuel warning come on. But I have them on power and speed. They are wide open throttle at 50-55 and I can do 55-60. When just playing on the river with the family, I think I can put about 4 hours on my engine meter with a full tank of gas - that is some riding, idling, a little towing kneeboarding or tubing. I am pretty impressed with the fuel economy of this older machine.