There are more bad ski owners than bad manufactures, but there are a few lemons made by all, it happens. Ocean ridding or lake, pulling tubes or just ridding? Speed junky or just cruising? super charged or no (guessing no super charger from yamaha models you listed)? For what you are wanting to spend might save a little more money up and buy new.
I have vx cruisers, If I had it to do over I would have a vxr/s. What I have is ok, but would like a little more speed, and I only ride in lake so the slightly rougher ride isn't really noticeable. Just my 2 cents.
Best of luck on your hunt