Can I ask why, at this early stage, before even having decided on the direction of the course, you have narrowed down your training provision to 2 companies? I realise that Delta is an unusual course but the training you would receive from Cabair could be offered in whole by probably 6 organisations, or different parts by perhaps 30 or more different companies.
If you have some particular reason for choosing Cabair this may have a bearing on responses given here.