Buying a "starter" dive computer makes a lot of sense as many divers quit after a year or two. As your skills and interests progress, you can aways upgrade to a better one.
It's been a while since I bought my last dive computer, but looking at the spec for the Leonardo, it looks okay. Personally I'd prefer one that includes a stop timer, but that's not a show stopper. The ability to download your dives to a PC is a good one to have. Have a chat with your instructors and see what they use and why. Enjoy your diving and keep blowing them bubbles!
