Dear Graham, I think that these shots are really good(considering that you want to invest in buying better camera). Some of them are amazing! Also, as you are new here, I would want to suggest to you to make shorter album of photos, as you would spend bunch of great quality photos in one post, whereas you could make 3 posts instead.
For some tips about camera, you can read my recent post https://steemit.com/lifestyle/@alexcote/the-best-beginner-s-travel-camera-great-for-steemit-users
Hope I helped you and gave you honest review, as you wanted :)
Best of luck!