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Guys, firstly thanks very much for the awesome response.

You have helped by bringing things to light that I hadn't considered.

However I'm potentially even more in two minds now!!

I am leaning towards a new for the following reasons.

I won't pay the VAT on it reducing the initial outlay to 650 not 800. I am also going to see if I can get a black Friday deal from a reseller to save a few extra pounds (appreciate this probably won't be much)

The peace of mind and warranty will be there in the most important year of the business, the first year.

I will also be able to claim it as a business expense and will receive tax relief on it for its purchase cost.

It should perform pretty well for what I need and make work pain free from that perspective (appreciate a 2012 could also do that but this *should* perform better)

I have a couple of months to play with anyway so may change my mind again but this seems like the best option. My work revolves around me being at the computer and/or the phone all day so I think the core machine being reliable or easy to fix if something goes wrong is key.

Monitors mouse keyboards etc I can skimp on a bit.

Thanks again for all your advice - really very helpful.

Now if you could all tell me I'm doing the right thing and validate my decision that would also be greatly appreciated
 
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