No substitute for simply going and having a look (without cheque book!) at as many as possible.

Don't be shy about asking lots of questions, no matter how dumb you think they are.....and also for advice.

When down a marina have a wonder around for similar boats - if lucky and someone onboard say hello and explain what you are looking at and your low knowledhe base - odds on they will be happy to advise / jump at the chance to show off / talk about their own pride and joy....and things to look out for.

Don't forget that delivery to your chosen berth could be a big factor in your ŁŁŁ calculations - especially if you need proffesional help and / or some immediate refurb / equipment.....

Have fun