Mid Range Watch Computer - Geo 2?

[fishydiver123]

I am looking to buy a new dive computer to replace a chunky and unreliable Oceanic veo 100nx. I want something watch sized, as the 'puck style' computers are too chunky for my liking, and my eyesight is still, thank God, fine.

At the moment, I am looking at the Oceanic Geo 2, which I can get for £230, and the Suunto D4i, which is about £280. Is the D4i worth it or should I just save myself £50 and get the Oceanic? The lifetime warranty is certainly attractive, and I don't see myself using air integration at the moment, so I am leaning towards the Geo, but I want to be sure that there's no major drawbacks.

One more thing: there is an eBay listing for an Oceanic Atom 2.0 going for £150 without a warranty but unused. The seller is new to ebay. Is it worth the risk or should I stick with my instincts and go for something new?

Thanks in advance for the help