Hi Eden - I have to admit to knowing very little about the high-end detectors. I'm sure they are excellent. There are lots of reviews on YouTube that would be worth checking out. I use a Garrett AT-Pro which is a mid-price machine.
Be sure you have good permissions to detect on before parting with a lot of money. Remember it can take a lot of hours of detecting to find anything worth keeping. Most people who start the hobby give up in frustration. Enjoy the walk and any finds are a bonus.