Recommend me a dive computer please

[Shake&Bake]

• Mods, I've opted to post this in the lounge as other divers may not be necessarily interested in other gadgets if I had posted it in "computers, gadgets & stuff" and may miss this.

Having recently gotten my PADI open water wings, I am keen to purchase my first dive computer. With so many on the market, I would appreciate someone's first hand advice. The criteria I have chosen to shorten the list would be the following -

- Wrist worn
- Relatively easy to use
- Displays for Depth, Dive Times, Decompression, Ascent Rate, Surface Intervals and Nitrogen Absorption-and-Release
- Appearance not really important as it will only be used for diving, not every day.
- Battery needs to be interchangeable without the need to send away, as I travel a lot
- Great plus to have an integrated compass
- Usual safety algorithms
- Needs to be back lit
- Needs 2 gas mix as a minimum
- Audible alarm
- Dive log software, with a decent memory, and should be up loadable
- My plan is to advance my training as quickly as possible, with my next certificate being the advanced open water and so on, so while I am a novice now, it should be capable of being the only computer I would need for say the next 5 years.
- Below $500

Some of the ones that are very close to making the grade are the Mares Smart Wrist Computer, Cressi Giotto Wrist Computer and the Suunto D4i. However none seem to tick all the above boxes.

Thanks.