I have both the OSTC4 and OSTC3 Plus. The screens are extremely visible underwater, with the OSTC4 having a better resolution and much larger screen (equivalent brightness). There are quite a few YouTube videos of other computers to compare - these stood out. As far as computers go, they have all the features needed (even up to tech). I find having a nice piece of technology on my wrist provides some intangible comfort, especially on Blackwater dives :) The screen is so vivid I even managed to spot a battery warning (forgot to charge it) on my buddies computer from distance!

Thanks. I have just started scuba diving and am looking at getting the ultra budget Cressi Leonardo Dive Computer. Is getting that a bad idea given I am just a newbie?

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!