I hadn't realised Bailey no longer produces the
bailey orion 400-2 , hence my comment (which is still true by the way)
Secondhand caravans are a rather different ball game, as presumably any initil problems should have been sorted, so a young secondhand caravan can often be a better bet, But as Mr G says evidence of a good service history can be an important consideration.
If you are a novice with caravans, then its all too easy to miss important tell tale signs of problems, so in my opinion its very important to have any prospective purchase checked
before you agree buy it, even from a dealer, if possible take an experienced caravanner to look at it with you, or employ a AWS caravan techie to do a pre purchase check on it for any issues. its money well spent.
If a seller is unhappy about having a caravan inspected, ask yourself why, becasue they are quite likely trying to hide a problem - walk away.