Choosing a mac mini

Hello guys,
I want to buy a mac mini for ios development and I cannot decide which one to buy.These are the ones I have came across so far,and I would appreciate if you would tell me which one to buy,or suggest any other mac mini.

1-)Mac mini i5 2.3GHz/4GB/500GB/AMD Radeon HD 6630M (845$)
2-)Apple Macmini 2.66Ghz Core2Duo Server Cpu 4GB Ram 1TB Hdd 256 Mb GeForce 320M (675$) (unused)

3-)Mac mini Core 2 Duo 2.4GHz/4GB/320GB/GeForce 320M/SD/Mac Os Lion(845$) (unused)
4-)Apple Mac Mini 8 Gb. Ram - Core 2 Duo 2.4 Ghz(2010 Unibody Mac Mini)(550$)

What do you suggest? Should the fourth mac mini would be enough?

p.s=These are the Turkey prices,that's the reason why they are so expensive.

Number 1 if you can afford it

Number 4 if you are on a budget

louishen said:

Number 1 if you can afford it

Number 4 if you are on a budget

Click to expand...

Do you think if I get the number four I would have any problems?Or should I just buy the number four not to have any problems?Thanks for the advices.

Here is something else to consider. Do you already have a monitor, keyboard and mouse? If not, I would probably look into stepping up to an iMac for just a bit more. for just development, really, any of the above will work. I always suggest you buy the most current and best that you can afford at the time. And that really goes for any device.