Two amazing job offers - which shall I choose?

RBS
IBM
#1

Hi guys,
I graduated from university in july and have been applying for jobs and recently have had great success, being offered 2 fantastic jobs, so I’m here looking for genuine advice from those who know the schemes.

First offer is from rbs and its the corporate head office scheme, which will pay circa £34,500 a year.
The second is from ibm for technology consulting which pays £27000 a year.

I’m looking for serious advice from people with first hand experience of the schemes or the companies that will actually aid in my decision.

Thanks
Jack