In general any boat is only worth what someone is willing to pay for it. The better boats cost more and the worse boats cost less. If you find a free boat, run away, because you probably can't afford it.
We all hope to find a bargain, but when it sounds too good to be true it usually is.
We can't read your mind and tell you what you want. If you can tell us what you want we might be able to suggest some brands to look at. However, learning what you really want usually takes a lot of research and learning. You might try some charters too. The quickest way to figure out if a boat works for you is to live on it for a week or two.