Ive lived on a lake since I was born and have riden all types of jetskis. Go with Yamaha. Dont get a stand up. They are annoying and only one person can ride. Some of the most fun Ive had on a jetski is putting 2 or 3 people on them and trying to knock each other off. Granted not the safest but fun.
With that said. Yamaha makes an amazing waverunner. Best I've used and all my friends have them.
We're buying a couple this summer and will be going with Yamaha. I think we're going to get a couple FX Cruiser SHO. They're big but we want an all around waverunner that even parents can use to just cruise the lake. But they are also FAST!
Good luck on your purchase :bigok: