@Kayfersmum its very difficult to advise about machines. Everyone has different ideas and preferences. But I have used both Jaguar and Husqvarnas along with many others and taught people how to use them. There is a learning curve to an overlocker. I’ve been using them for over 25 years.
You have to decide what is important to you. Ease of use and threading? Stitch quality? TBH as a first timer I would always go for ease of use and threading. I know people who don’t use their machines because it’s a faff to change threads or they don’t know what to do when one breaks etc etc.
My sewing machine is Husqvarna but I wouldn’t have one of their overlockers. They aren’t made by Husqvarna but Toyota I believe. There is nothing wrong with them but they don’t 'sound' as good as some. Sounds daft I know.
But I think other people on here will know what I mean. They are not the easiest machines to thread. The Jaguar on the other hand pleasantly surprised me when I had to do a lesson on one of those although I don’t think it was this model. The front opens up completely and gives you easy access to the loopers. Genius! This one also has a thread cutter on the needle plate. Not essential but a nice little touch. I also found it made a nice stitch and sounded nice.
If you can get to a shop to try machines out that is always the best idea. However in these times that’s not always possible. Just be careful where you buy it from.