with "bitcoin" (i hate quotation marks but you get my point) as it is at the moment, I think the contracts are a very good investment.
Our core business is server hosting and we understand redundancy issues, our model is basically as follows;
Initial order: 2 x 1TH miners and 1 x 2TH miners for a total of 4Th hashing power
These are hosted in an Enterprise class data centre with all the trimmings (IRIS Scan entry, air conditioning, Diesel fuelled backup generators with 72 hour tanks etc.)
We are selling off 2TH of mining power and we are keeping 1TH mining power for ourselves (to ensure we can run this service profitably etc.)
The remaining 1TH will be used to pay bonuses to all parties so you may end up getting more Bitcoin that the Hashing power would be capable of generating alone.
Also due to our server hosting background the main reason we purchased 3 separate units is so that in the event of a machine failure we will still be able to deliver to our contract holders, we have business insurance to take care of any potential losses to the company whilst a machine is being repaired/replaced
Might I recommend the 50GH package (obviously) as a start
G
So people are not disappointed, Mining will start in February 2014 (unless miners are delivered totally ontime early January 2014)